Erika's Old Big Sister 1

With it being a lazy Saturday and her morning cartoons having ended, Marie Swanson was in the backyard playing. Since the change had greatly affected her life, moments like these were the only ones she didn't get angry about. Running aimlessly around the grass like a little kid was really pretty fun, even if she had no clue what she was doing. She climbed up to the top of her little plastic slide, the one that was just about as tall as her, and threw her blankie over her shoulders, pretending to be a superhero.

Soon enough though it was early afternoon and the rush of energy she had been getting from her cartoons and the sugar cereal she ate watching them was wearing off. Trying her best to suppress a yawn, Marie pulled her blankie off and carried it inside, stretching her arms as she did so. Entering the house brought noise to her little ears from the kitchen, and deciding she was thirsty, the once-teen-now-toddler strolled in.

"Mommy?" Her mother was seated at the breakfast table, looking over the late paper, "I wan' some juice!"

"You're going to be taking a nap in a few minutes, sweetie," came the answer, Veronica not even looking up from her paper. "You know you can't drink that close to it."

"But mommyyyyy...." When the childish whine got the women's eyes to turn to her, Marie rapidly turned her angry pout into a pleading one and tacked on a drawn-out "Pleeeaase?"

The responce was just a stare at first as Veronica looked over her youngest child's best face for cuteness. Having had three daughters, she'd built up quite the resistance to cuteness by now, but still not a total immunity. And of course her baby had to exploit that every chance she got.

"Oh... fine." Although slightly irritated, the woman with dyed hair rose from her seat and walked to the refrigerator, "But don't let me hear any crying if you wake up wet, understand."

"Yes, Mommy!" Marie grinned smugly to herself as the grown-up poured some grape juice into a sippy cup and handed it to her. She took a taste of it as she swung her blankie over her shoulder and turned to leave.

"Marie!" The tot suddenly stopped to turn and look up at her mommy, whose hands were on her hips and whose face held a scowl. "Aren't you forgetting something, young lady?"

"Hm? Oh!" Blushing, Marie smiled half-apologetically, "Eheh... Thank you mommy!"

"That's better."

With her mother satisfied enough to go back to reading the paper and having secured her precious juice, Marie made her way into the living room, trying to find something that would hold her three-year-old attention span.

It didn't take long to find such an object in question, though. Sitting on the carpet and staring up at Sesame Street was her older-yet-diapered sister Erika. A tiny growl escaped the girl as she looked at the overgrown baby, giggling and clapping her hands along with the puppets on TV. Squeezed in her arms was her favorite stuffed unicorn.

The truth in the matter was that Marie wasn't always a three-year-old. A few mere months ago, she was a teenager doing her best to climb the high school social ladder. But that all changed one day; Erika had spent her whole life (at least as far as Marie was aware) unpotty-trained and being treated as a baby. When the then-teenager refused to take the spoiled brat out to the mall, she discovered Erika had found some magic perfume, but results of trying to apply it were disastrous. Not know what it was or how it worked, the brown-haired teen wound up suffering a frightening and impossible change to her age, reducing her to a toddler  trying her best to get toilet trained.

Even stranger was that nobody seemed to mind the change afterward; in fact only Erika and herself seemed aware of it. Shortly after their other sister, Sarah, who had up until then been a toddler herself, was transformed into a teenager, effectively having taken Marie's place in the family.

Being reduced to a girl undergoing potty training hardly sat well with Marie, not when she knew for a fact that Erika still had the perfume in her room somewhere. The diapered eleven-year-old knew what happened to her and she did nothing about it. Marie's guess was that the big baby liked actually having someone smaller then her and only had Sarah as a grown-up because she was stupid enough to cater to her every whim. Naturally Marie had been doing everything she could to make Erika's life miserable for her, and she saw no reason to pass it up now.

Grinning maliciously, the three-year-old tip-toed over the carpet, approaching like a little sneaky ninja wearing training pants. With Erika so distracted by the puppets on TV, she was easy to ambush like this. Trying to suppress her joy as she got into position, Marie grabbed the bigger girl's exposed diaper and gave her a wedgie.

"EEP!" The eleven-year-old stood bolt-upright at the assault, squealing in pain as her garment was lodged into her rear. Teary-eyed, she turned around back to the toddler, "M-M-MARIE!"

"Yeeess?" Marie could only giggle as she saw the girl stuck in helpless pain, "Some'fin' wong wif' yer diapie, big baby?"

Erika only let out a moan of discomfort, dropping her stuffed unicorn so she could tug at her diaper, "M-Mom said you're naw-not allowed to give me wedgies an-anymore!"

"Ooo, ya gonna tell on me?" dared the toddler, her hands on her hips. "If you do, you'll jus' be a stoopid tattle tale!"

A whimper escaped Erika at that point. Marie was being very naughty but she certainly didn't want to be a tattle tale.

"'Sides..." A new layer of devilish brattiness came upon Marie's face as she snatched up the dropped unicorn, "I gotchyer toy!"

"EEP!" The three-year-old was already halfway to the stairs when Erika started to give chase. "Marie, no fair! Put her down!"

As her stupid diapered sister came waddling after her, Marie grinned smugly, stuffed unicorn in her arms. Ever since the big baby had gotten it for Christmas it had long since become Marie's favorite "hostage." Giggling under her breath, she began to hop up the stairs, two steps at a time, letting a taunt of "You'll neeeeever get it back!" be heard over her shoulder.

"Oh, won't she?" Marie emitted an "Eeep!" of her own when she saw her formerly-youngest-sister coming down from the top of the stairs.

The three-year-old tried to slip around the girl who'd replaced her, but the toy wound up grabbed and pulled out of her arms, "I'll take that. And maybe you as well." Sarah smiled as she reached down and scooped the toddler up too.

"AH!" Something she hadn't gotten used to at all since she had been shrunk was being picked up, and Marie soon dissolved into kicking and screaming under her sister's arm, "Wemme goooo! I wasn't doin' nothin'!"

"Really? Because it certainly looked like it," remarked Sarah with a grin.

"S-Sarah! You caught her!"

As the diapered member of the sisters Swanson ascended the staircase, Sarah smiled and handed her the stuffed toy, "Hey, there, Kiddo. I believe this is yours."

"Uh-huh!" Smiling easily now, Erika hugged her toy happily and then went to extend that to the teenager who'd returned it, "Thanks, I was scared she'd throw her out the window again...."

"You need to keep better track of her, Kiddo." With one arm still holding Marie, Sarah wrapped her other around her diapered sister, "Seems like little hands keep wanting to get to her."

"HEY!" Afraid she was in trouble since she'd been caught, Marie began to squirm about in her place as captive, "I-I wasn't gonna do anything with it...."

"You shouldn't have taken it anyway."

Sarah put Marie back on her feet, but when the three-year-old immediately tried to scramble away, she found to fingers had gripped her ear-lobe. She now had no choice but to stand painfully in place and listen to her once-youngest-sister scolded her.

"We talked about this, remember?" Sarah frowned at her sister, speaking lightly but firmly, "You have your own toys, you don't need to take Erika's. How would you feel if she started taking the stuff you liked playing with?"

"I-I wouldn't wike it," admitted the toddler. Although it was more due to the duress of the moment then any remorse, "Now wemme go!"

"Fine."

The blonde among the sisters let go of Marie's ear and the toddler scurried away. For a moment the three-year-old glared at the bigger girls, pouting firmly, before stomping her way back downstairs.

"She's still pretty fussy, huh?" With a sigh, Sarah soon went back to smiling as she ruffled her much-nicer-sister's hair, "I bet she'll grow up a bit once she's in pre-school."

"Hehe... Y-Yeah..." After giggling as her big sister ruffled her hair, Erika gave an uncomfortable whimper. She leaned closer to the blonde and quietly whispered, "Umm.... M-Marie gave me a w-wedgie too..."

"Oh, did she?" Kind and gentle, Sarah bent down and fiddled with her sister's diaper. She pulled the garment out of the discomforting twist it'd been put into and adjusted it so it'd be nice and snug again, "There you go, Kiddo."

"Aww.... Th-Thank you, Sarah!" Blushing as she wiggled her rear and felt how cushiony it fit once more, Erika hugged the much-taller-teen.

"Don't sweat it Kiddo." Another ruffle of the hair followed before Sarah checked the clock on the wall, "But anyway, it's about time for your nap, isn't it?"

"Oh!" Erika blushed as she spotted the time herself, shyly nodding, "Eheh.... Y-Yeah... I'll just go lie down... Ummm...." The eleven-year-old glanced at the staircase, "Or do y-you want some help with Marie? She might be a little gru-grumpy after what happened?"

"Nah, I can wrangle her up myself." The smaller of the sisters began to step away slowly, so Sarah patted her rear to speed her along, "Go on, don't worry about it. My baby sister needs her cuteness sleep!"

"EEP!" Covering her bottom as she stepped into her room, Erika did as she was told, "Hehe... O-Okay. I'll try ta stay up 'til Marie's here."

"Don't force yourself," replied the blond, sinking as she went downstairs.

Smiling, the diapered girl left the door to her room open as she put her padded butt onto her bed. Before lying down and pulling the covers up, her eyes went to a worn, green music box resting on the bedside table. The box itself had been a very special gift from her dad, and Erika was always very attentive to make sure she took special care of it. Winding it up slowly, it soon crinkled into life with a very soft, smooth lullaby.

A general rule in the house was that Marie needed a mid-morning nap each day, and Erika found to her semi-embarrassment she was subject to one as well on days when there was no school. Could be worse though, she supposed. She might have been having to take one every day, and that would be even worse humiliation then she already went through.

On the other hand, naps weren't that bad of a baby-status thing. Pulling the covers over you with the sun outside and your clothes still on left one with a very soft and gentle feeling. And while Marie's attitude toward naps varied from accepting to throwing a tantrum to avoid them depending on how tired she was on that particular day, once she got in bed she was almost frighteningly cuddly.

So every weekend, Erika would slide under the covers with her formerly-big sister (the toddler's bed being insufficient to hold both of them), surrounded by her stuffed animals, and they could nod off to Slumberland together. Marie wouldn't pinch her or throw her toys in the mud or make embarrassing rhymes about how she wasn't potty trained, but just hug and cuddle her while they waited for the Sandman. It was over as soon as she woke up of course, but the ritual had grown very comforting to the eleven-year-old since the perfume had changed her life.

Sure enough, in a few moments Sarah appeared in the doorway, Marie led along by the hand. The toddler did look grumpy, as Erika had pre-supposed, but didn't seem to be putting up any fuss. She must've been tired today.

"Now the two of you get some rest, okay?" The blond picked up her little sister to deposit her on the bed, "I don't need two cranky baby sisters tonight."

"Hehe... K-Kay, Sarah..." Erika yawned, hugging her unicorn under her arm while Marie pulled back the covers, "W-We promise we'll be quiet."

"That's what I need." The eldest sister pulled the curtains over the bed closed, darkening the room slightly, "Heh. Don't think either of you need a bed-time story, you both look pretty tired today."

"Hmph... Am not..." Marie grumbled before yawning herself. When Sarah chuckled at it, she pointed angrily to Erika, "Baby's da one suckin' her thumb awweady!"

"Mmph?"  Red, Erika said nothing as she got under the covers with her sister, unicorn held and thumb in her mouth.

"Oh, hush. I saw another little girl with her thumb in her mouth when I got her up this morning." Grinning, Sarah pulled at the covers and began to tuck her sisters in, "There we go...." Both soon got a kiss on the forehead, Erika's accompanied by a tickle under the chin, "You both have sweet dreams, okay?"

"'Kay, Sarah!" The diapered one was the only one to reply, her words followed by a yawn, "Night-night!"

As their big sister retreated, smiling warmly, into the hall, the younger ones snuggled up to each other on the mattress. While the unicorn Heavenly was being held as well, Erika's arms found themselves around the toddler as well, exchanging Marie's body heat for her own. She let out a comfortable sigh as she sank into her sheets, diaper crinkling and her little sister turning deep into her flat chest. Everything just seemed perfect and secur-

The eleven-year-old was yanked out of her thoughts when Marie pulled her face close by the collar of her shirt, "If yer diapie weaks an' gets me wet, I'ma kick yer butt. Got it?"

"Y-Yes'm..."

Erika's thumb found itself back in her mouth after that, but Marie offerred no further threats. She just joined in the cuddling as the two sisters nodded off to dreamland.

o-o-o-o-o-o-o-o-o

There was a crash as a number of hard objects fell from the wall-shelf onto the floor, scattering in different directions. Alerted to what was happening, Erika sat bolt upright in bed, confused and bewildered.

"Mmph..." Frightened, the eleven-year-old plucked her thumb out of her mouth, "Wh-what's going on?"

"Where is it?!"

Erika's mind soon took stock of her surroundings. Diaper was wet, but that was usual after a nap, Heavenly was still safe under her arm, but Marie was missing. Until a number of books were pulled off her shelf and thrown angrily against the wall, giving away the toddler's position. The little girl's bookshelf was sadly just low enough for the three-year-old to rapidly pull each volume out and fling it over her shoulder, making the back wall of the piece of furniture steadily more visible. And judging by just how messy the room had gotten, she'd been at this for some time.

"Marie!" Erika let out a squeak of horror, rapidly rising to stop her sister's reign of miniature terror. "What're you doing? I don't like me room being- OW!" One of the thrown books had nailed her forehead as she bent down to address the toddler.

"Where's da perfoome?!" Marie spun on the spot, grabbing her big baby sister's shirt and pulling it forward again, "Tell me where you put it!"

"..... What?"

Erika had to admit, this was a subject she wasn't quite comfortable talking about. Ever since the perfume came into her life and rearranged everything, she'd been smart enough to not bring it up. If she insisted she'd been potty trained and her sisters had their ages switched and all but the perfume had made everything go topsy-turvy, she'd sound crazy to basically everyone around her. Mom might send her to a doctor.

So naturally, the next words out of her mouth (as she avoided eye-contact with the three-year-old), were, "I-I don't know what you're ta-talking- AH!"

The eleven-year-old was cut off as Marie grabbed a handful of her bangs and pulled on them hard, reducing her to whimpers, "Dun act wike yer stoopid, baby! Tell me where da perfoome is!"

"B-But..." Wincing, Erika took her sister's wrist and managed to wring it off her shirt, only for it to also start pulling her hair, "OWW! M-Marie, you're being ver-very mean! Mom's not gonna li-like-"

"Shut up!" The diapered girl could only let out a little whine as her little sister gave her hair another tug, "Tell me where 'dat Perfume is! I know you's still got it!"

"Well...." Marie had tried repeatedly to get into her room, but Erika just assumed she wanted to make a mess and break things. Now that the eleven-year-old thought about it, it was more likely she wanted to search for that bottle of mystery-liquid. Maybe it was time to admit it then, she thought as she gave a gulp, "M-Marie, that stuff's dangerous. I d-don't think it's safe to use any m-m-more...."

"Oh, easy fer you to say!"

Her bangs were released then and the little girl gave a sigh of relief. Eager to keep her scalp out of the toddler's range of terror, Erika rapidly stood up and took advantage of her height. Marie however, in spite of ceasing her hair-pulling, was giving her a very mean glare, perhaps the worse she'd ever given her.

"You 'fink it's dangwous even 'dough I'm stuck wike 'dis, don'tcha?"

"..... What?" Now genuinely surprised at this change in tactics, Erika took a step back, "What're you ta-talking abou-"

"You know I ussa be a big girl!" An accusing finger was pointed at the diapered girl's chest, which only took her more for surprised, "I was a big girl, an' Sarah wassa widdew baby, an' I was da oldest! When da perfoome made me aww widdew, did you do anythin' ta fix it?!"

"Well...."

Now the eleven-year-old felt a little guilty. She'd never even thought about that before.... True, she had to deal with wearing diapers all the time now, and a few other babyish things, but at worst that was only a little embarrassing. Well, not just "a little," but Marie's entire life had changed. She was stuck as a little girl again and couldn't see any of her friends or regain her social status.

Squirming shamingly, Erika let out a tiny bit of reasoning, "Well, I..... I just.... You always seemed to li-like being a ki-kid so... I guess I nev-never thought ab-about-"

"Neva thawt 'bout how I feel?!" Now brimming over with anger, Marie kicked her baby sister in the shin. This wound up having a bad effect on both of them as Marie's tender little foot now hurt in addition to Erika's poor leg.

"M-Marie, I'm s-sorry!" Hurt by her own insensitivity to her sister's plight and how long it had been going on, Erika plopped down onto the bed and began massaging her poor shin, "You.... If you'd com-come out and tol-told me how bad it was instead of be-being so mean all the t-time..."

The brown-haired toddler crossed her arms, frowning at the overgrown baby, "So you'll tell be where you got da perfoome?"

"Well...."

That was something else. Erika had found a fair hiding place for the bottle and she didn't quite want to give it up. Even if she was in a pickle, Marie was still very mean and immensely greedy even before she got turned into a toddler. She wasn't exactly the most trustworthy person, especially when dealing with a magical perfume that could do anything...

"I-I hid it and... I d-don't know if I should-"

"So you wanna weaff' me wike 'dis, huh?" The toddler gave her the cold shoulder, "Fine! I jus' knew you was evil!"

"Wait..." The diapered girl got off the bed and knelt beside the much-smaller victim of the perfume. With a gulp, she spoke very tenderly as she pleaded, "M-Marie, you're my si-sister..... I don't wanna ha-have you mad at me... An' I'm supposed to he-help you if you're ever in trou-trouble, so I would ne-never leave you stuck like thi-this...."

It felt really, really weird to be sympathetic to someone who'd been mean to her so many times without any remorse, but Erika could hardly ignore this. Not when it was partially her fault. "If-If you go outside, I can get ou-out the perfume and we can try to fi-fix you..."

Suspicious of her sister's sincerity, Marie half-turned to look at her, opening one eye, "Hmph.... What if you jus' wock me outta da woom soon as I weave?"

"Ummm...." Tricky question. She needed a show of trust. It was at that point that the eleven-year-old baby saw her stuffed unicorn lying limply on the bed. That might work, as it was her favorite toy and Marie loved taking it so much. With a sigh, Erika picked it up, squeezing it before holding it out as an offer, "You.... You c'n take Heavenly if you want. I-If I lock you out, you'll go an' spr-spread it through the mud and stuff, won't you?"

"'Dats wight!" Marie glared as she snatched the toy away with a suddenness that made the big baby eep. "You bweak yer pwomise an' I'll run her thwough da mud, wip her open, an' fwow her fwuff awound 'til she's nice an' dead!"

Erika whimpered at the mental image of the death of her precious unicorn, but nodded as she got to her feet, "O-Okay.... You can do that... B-But I promise I'll get you fi-fixed. Just give me time..."

"Fine."

With that, Marie slowly, very slowly walked to the floor with Erika following her. It seemed she was taking her time in case Erika suddenly turned out to be tricking her all the same. Even as she carefully exited the room, she shot her big baby sister a suspicious look emphasizing a deep frown.

"I-I'll just be a m- a minute..." Mumbled out the diapered girl softly as she carefully and quietly shut the door.

Seconds ticked by. On the other side of the wooden portal, Erika was surely looking up her hiding place and getting out that magic perfume, all while Marie was left standing and holding the unicorn, wondering if she was right to trust her or not. Perhaps if she'd just kept trashing her sister's room until she found it, it would be better. Or just beat up Erika until she gave up the location. Granted, Erika was bigger than her, but she was only a big baby, and Marie still found much pleasure it seeing how easy she was to push around in spite of her current seat of status.

Silent deliberation came for a moment as she considered if she should keep waiting when her sister might just be planning to stall until mom to came upstairs and then claim Marie stole her toy. The girl in pull-ups finally decided to hurry things along, "You got 'fwee more minutes, 'den I'm killin' yer unicawn!"

A smirk had to be repressed by the toddler as she heard Erika let out a terrified eep on the other side of the door as she scrambled to hurry. Soon enough, the door creeked open again and the eleven-year-old peeked out, emerging from the safety of her room.

It was in her hand now, crystal spherical glass with a sprayer top, the tiny little pink puffer attached to it and hanging limply. Swirling on the inside of the glass as the little girl's hands trembled was the magic liquid itself, shimmering and reflecting the light into little twinklings on the walls and ceiling. Erika was holding the glass carefully, cupped in both hands to be sure it was safe.

Marie however, was not so cautious.

"There it is!" Padding immediately to the bigger girl, the three-year-old began to hop up and down, futilely trying to get the object so far out of her reach, "Gimme! I wan' be big again!"

"W-Wait!" Whimpering worriedly, the diapered girl took a cautious step back from her shrunken sister, making sure the mystery-item was out of her grasp, "H-Hang on. We need to think carefully before we do anything!"

That was certainly not what Marie wanted to hear. Pout firm on her face, she made a cry of "Give it!" before bitterly kicking the big girl once more in the shin.

"OW!" Although hopping on one foot, Erika was still able to keep a protective grip on her precious perfume. Even with her unicorn being held hostage, this attack made her all the more eager to run back into the safety of her room, yet she managed to stay her ground, "St-Stop hitting me!"

"Gimme da perfoome an' I won't have to!" came the simple demand as the ankle-biter crossed her arms.

"I know you wa-wanna grow up, but it's not as simple as th-that," mumbled out Erika sadly, squirming about. "We dunno exactly wh-what this can do, remember? If we just sp-spray you, it could make things wor-worse..."

"I'm fwee years old!" squeaked the toddler in a piercingly high tone. "Can't get 'ny worse."

"Well..." turning red, Erika actually smiled slightly as a mental image went into her head, "Heh... You could wind up wearing diapers like me..."

That got the toddler quiet, as at that prospect, she only stuck out her bottom lip and turned away.

"See? So we need to be careful..." Smiling gently, Erika got on her knees, looking kindly at her currently-little sister, "If we're not, something really bad could wind up happen-"

Erika wasn't sure why she was so surprised at what happened next, but she was all the same. Being on her knees to better address the regressed girl, she left herself in a vulnerable position. Now that the bottle was in reach of her tiny little arms, Marie wasted no time in simply reaching out and snatching it from her big baby sister.

"Mine!"

"Marie!" Gasping, about ready to kick herself for not seeing this coming, Erika made a frantic grope for the bottle. Even as she reached for her, the three-year-old went scampering down the hall, "No fair! Give it back!"

Erika fumbled to her feet as fast as she could manage. The perfume was way too unpredictable for Marie to just zap herself with- they had no idea how many different, bizarre effects could come about when sprayed. Marie could come out as an old woman or an unborn baby for all Erika knew. She already hated herself for how Marie had wound up in the wake of the perfume- if she turned out even worse and Erika was unable to fix her, she didn't know how she could live with herself...

"Marie, please!" The toddler had stopped just outside her own room, perfume poised to spray herself, "I don't want you to get hurt!"

As the eleven-year-old took her worried steps to the little girl, it was far too late. An intake of terrified breath came as she saw her little sister squeeze the puffer and spray her stomach with the diamond-colored liquid.