New Year, New You (Patreon)

Shayla gasped, eyes popping open at the sensation of being dragged across her bed, thinking, for a moment, that she was being kidnapped, only to see her stepmother.

"Wh-What's going on?" Shayla shook her head, which was still a bit fuzzy from the drinking she'd done earlier in the evening. 

"You know what you did," the woman hissed. 

"Hey!" Shayla struggled as she was pulled over the woman's lap. "H-Hey!" she squealed, voice going exponentially higher as she felt her shorts being tugged down. Despite her stepmother's insistence, she wasn't certain what this was about... Sure, she'd had some alcohol, but not only was she over twenty-one, it was New Year's Eve! Or, rather, it had been... It must, technically, be New Year's Day now, since she'd watched the ball drop, and then, apparently, dozed off in her bed, clothes still on.

Her stepmother was strict, yes; even she couldn't blame Shayla for wanting to celebrate the holiday, though, could she? And yet, here Shayla was, feeling the cool air against her backside, seeing the woman hold up a heavy, wooden hairbrush.

"I'm sure you think you're too old for this," the woman said, "and that I ought to ask your father... But I am your mother now, young lady, and I can't allow you to get away with this behavior."

"I-I didn't do anything!" Shayla whimpered, eyes bulging as her panties were lowered as well, earning a giggle from behind her. She turned, even more mortified at the sight of her stepsister standing there, watching the whole thing... And baffled at what she saw the girl wearing, although she didn't have the opportunity to say anything about it before the hairbrush crashed down on her bare bottom.

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Taryn's heart pounded as she heard her mother's car pull into the driveway, knowing that this was her last chance to change her mind. She squirmed, diaper crinkling, mostly confident that her plan would work, but not completely... And, to be perfectly honest, not sure if it would be more fun if it did, or didn't.

"Good morning," her mother told her, walking in the door. "What are you doing up? Wait, what are you wearing?!"

Taryn fidgeted, tugging at her t-shirt, blushing, not having to do much acting. She wasn't that embarrassed at her outfit, since she wore it whenever she had the chance, though letting herself be seen in it was something else entirely, something she had far less experience - none, in fact. Having a mother - single until fairly recently - who was a nurse, and who tended to work long hours, like she had tonight, made that easier... And had given Taryn access to her first diapers, before she'd bought some cuter ones online.

"What is going on, Taryn?" her mother demanded. "Why are you dressed like a two year old?"

"I-I didn't want to!" Taryn sniffed.

"Well, of course not," her mom said; if only she knew. "So why are you?"

"Sh-Shayla made me do it!" Taryn whined. "Sh-She had a party, a-and she said she needed a Baby New Year, a-and I was the smallest, so..." Taryn fell silent, staring down at her feet.

"Oh, sweetie," her mother pulled her into a hug. "I'm so sorry! She shouldn't have done that! Any of that..."

Knowing her mom couldn't see it, Taryn allowed herself a sly grin. "A-And she told me I wasn't going to get my big girl clothes back until I finished cleaning up after her party... B-But when I did, she was asleep, so I-I didn't know what to do!"

"It's all right," her mother promised. "You did the right thing... Mommy will take care of everything..."

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Shayla had never experienced anything like this before... She didn't know if that made it better or worse, if she should be grateful she didn't have any memories of it from the past to make her feel even more childish as she writhed and bawled across her stepmother's lap, or if having some idea of what it would be like would have at least prepared her for the sensation of enduring swat after swat, feeling her bottom warm and swell, turning bright red from the punishment, Taryn standing behind her the whole time, practically bouncing up and down in what looked an awful lot like a diaper...

She had no concept of how long this would go on, of how much more she'd have to get through, and that just amplified the helplessness of the situation, the hopelessness. It already seemed as though everyone at her father's company looked down on her, thinking she'd gotten her position because of who she was... She could only imagine how much glee they'd get from this, seeing her wiggling in her chair, unable to sit still, the older ones very possibly recognizing her motions from getting spankings of their own, when they were younger.

At last, it stopped, Shayla remaining collapsed over her stepmother legs, attempting to compose herself, for a minute or two, listening to what was going on above her faintly, more like something that was going on in a television show than real life.

"I assume she has more than one of those," her stepmother said. Taryn must have nodded, since Shayla didn't hear anything, yet the woman went on anyway. "Can you go fetch me one?" Shayla heard the pitter-patter of her stepsister's tiny feet, though, in the moment, she was in no condition to ponder where this was going, or even put together what they were talking about. 

At least, not until the girl returned, tossing something onto Shayla's bed. Shayla had recovered enough to turn, to look at it, nose wrinkling as she asked, "What is that?", her expression betraying the fact that she already knew - or suspected she knew - the answer.

"Don't play dumb with me, young lady," her stepmother scolded her. "You wanted a Baby New Year, huh? Well, considering the way you've acted, I think that sounds like something you're far more qualified for." 

"Huh?" Shayla furrowed her brow. "I-I don't..."

"Do you need another round?" her stepmother raised the hairbrush, Shayla shrinking back. "I didn't think so... Pick it up, Shayla." Reluctantly, Shayla reached over, fingers closing around the garment, feeling the plastic crackle, the padding compress slightly. "Now, you're going to ask me to put it on you... And, if I don't believe you actually want it..." She tapped the hairbrush against her open palm, the sound of the impact hanging heavy over the room, speaking louder than any spoken threat could have.

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Taryn didn't hate Shayla... She had, in fact, been thrilled when she met her, had seen how much bigger she was than her, despite being so close to her in age. It was like all of her fantasies had come to life at once... A rich stepfather, who spent so much time away on business, as he was now, an older sister who could easily, if she wanted, force Taryn to be her doll, could dress her up however she liked, make her do anything for her own - or her friends' - amusement.

Of course, just because that was what she daydreamed about didn't mean that it was really going to happen. It definitely felt like their age difference was bigger than it was, with Taryn still in college, thanks to failing out of a couple classes, and switching majors multiple times, and Shayla having graduated and moved on to an entry-level position in her father's company. 

Taryn had brought that up, too, had told Shayla how much of a baby she felt like compared to her, joking about how she even had to still shop in the kids' department for clothes since she was so small, laying the seeds to try to set up a trip to the mall, or a game of dress-up with some of Shayla's old outfits...

Shayla had never taken the bait. "I'm not that much better," she'd said. "My dad owns the place I work, and even with that, I only make minimum wage! I still have to live here because I can't afford anything else!"

"I do, too," Taryn had pointed out. "I've never even had a real job!"

"Yeah, but you're in school still," Shayla had brushed that off. "You'll get there."

Taryn knew she should be grateful, having such a supportive sister... But that wasn't what she wanted! She wanted someone mean, someone who would make fun of her, push her around, treat her like a dumb little girl...

And if Shayla wasn't going to do that... Well, maybe she'd have to take another approach. She'd never really considered it before, but when the idea had come to her, and so close to New Year's, the perfect opportunity for her to work diapers into it, she'd had to try...

Judging by how well it was going, she'd made the right call. It was fun to wear diapers herself, to be the baby, but being on the other side, watching Shayla get paddled, knowing it was thanks to her... That was pretty cool, too. And now, seeing the girl pick up the diaper, blushing and squeaking... It was all she could do to keep from reaching between her legs, giving her own diaper a rub...

"Pl-Please," Shayla pouted, holding the diaper out to Taryn's mother. "Pl-Please, could you... Could you put me in this diaper? I-I really want to wear it... I-It looks so... comfy..."

"And she needs it!" Taryn couldn't help calling out from behind her. "Because she's a big baby!"

"That's right," her mother agreed. "Don't you think so, Shayla? Aren't you a big Baby New Year?"

Shayla sniffed, starting to turn to give Taryn a dirty look, only to be stopped with a light swat on her thigh by the hairbrush, forcing her attention to return to her stepmother. "Y-Yes, ma'am," she sighed. "I-I'm a big Baby New Year..."

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"You little monster!" Shayla howled, thrashing helplessly in her high chair, the soft restraints stopping her hands and feet short, keeping her struggles contained. Her father, of course, got only the best, so it didn't matter how hard she struggled, the chair wasn't going to tip, or so much as budge from its spot. She was well and truly trapped... And she could feel her stomach churning already.

This couldn't be happening to her... She was an adult! She didn't deserve to be here, strapped to a high chair, wearing a diaper, socks, a bib, and nothing else, her tummy full of oatmeal that Taryn had told her, right before skipping off to school, had been dosed with fast-acting laxatives and a stool softener.

She knew Taryn was behind this, obviously... It had been clear - to her, though neither her stepmother nor father had believed it - from the start, especially once the diaper had been brought out, and she'd had to beg to be taped into it, with Taryn behind her, giddy, wearing one of her own. She must think they were stupid, they'd said. Why would Taryn lie about this? Why would she have put a diaper on herself? 

The pink, plastic potty was sitting in the middle of the floor, taunting her. It was a poor substitute for the actual toilet, naturally, but it was miles better than her current alternative. She groaned and grunted, tugging at the restraint on her wrist again, hoping to see something show a sign of weakness, either the strap wound around her arm, or the one going to the highchair, or the highchair itself... As far as she could tell, she might as well have been sitting still like a good, obedient little baby, waiting patiently for the inevitable.

"I don't want you making a mess," Taryn had told her as she buckled them on - which was, Shayla saw now, the exact opposite of the truth. "There's no time for me to clean you up after breakfast, and I'd hate for you to run around covered in oatmeal until your babysitter gets here."

"I can clean myself up!" she'd whined. "N-Not that I'd need to if you let me feed myself!" She'd blushed, embarrassed she hadn't gone to that first, that she was already getting so used to this treatment that she hadn't defaulted to think of that right away. 

But it didn't matter anyway, and perhaps knowing that had been what had kept her from saying it initially. Taryn wasn't going to miss a chance to spoon-feed her, even though the pipsqueak had to stand on a footstool to reach Shayla's mouth when she was sitting in her highchair. And, when she was done, when she'd scooped out every bit of the white goop from the bowl, she'd revealed why. 

It would have become obvious pretty quickly either way... She must have wanted to guarantee Shayla would have some extra time to dread it, to ensure she'd be on the lookout for the first sign, that she wouldn't optimistically write it off as something else... Taryn wanted her to know from the start what the growing pain in her tummy was going to lead to...

It had been bad enough, meeting her new babysitter, knowing it was the daughter of one of the people she'd used to work with, having the girl smirk at her, eyeing her in her diaper, sizing her up. She was a couple years younger than even Taryn, to add insult to injury.

"Sure," she'd said. "I can do it... It'll be extra if I have to change poopy diapers, though. I can deal with them, but I'd rather not, if I don't have to."

"Perfectly understandable," Shayla's stepmother had said, shooting Shayla a meaningful look. "I think she's still mature enough to not do that, at least."

And Shayla had been so eager to nod her head, to agree, having not even considered that possibility until her sitter had mentioned it, the idea of it making her feel more tiny, more infantile, as she squirmed on the floor in her diaper and t-shirt. She'd had no intention of contradicting herself, of making that a lie...

But now, here she was, trapped in her highchair, gasping as a cramp hit her... And something started to happen. Her body pushed, and suddenly, there was something warm, and mushy oozing into her pants, growing rapidly, despite her best efforts to stop it. She couldn't believe it... She was filling her diaper! Not only was that absolutely mortifying, she was also going to be in so much trouble when the babysitter got here, and told her parents that, on her very first day on the job, Shayla had already failed to do the one thing she'd promised...

It wasn't her fault, of course; based on how things had been going, however, she had little hope of anyone actually believing her about that, or, after what she'd done in her pants, much else. She'd just proven what a baby she really was... Why would they trust a Pamper-pooping baby's word about anything?

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Taryn poked her head into the nursery, an involuntary "Aww!" exploding from her mouth at the sight that awaited her there. Her formerly big stepsister was lying on the floor, legs in the air, coloring, glancing back over her shoulder to stare at Taryn from behind her pacifier. Her permanently padded bottom was on display, as ever, covered by only a pair of white, ruffle-seated tights, the t-shirt that made up the rest of her outfit nowhere near long enough to hide it, even if she'd been standing up.

It really was quite the transformation, Taryn mused... Barely a full month into the year, and there was no hint of Shayla's grown-up side left, at least not looking at her now. She was the perfect image of sweet innocence, an oversized toddler through and through.

There was definitely a pang of jealousy, seeing how adorable she was, wishing it was her, instead. That was, in fact, why she was here... Thanks to Shayla's father's insistence on always having the best, they'd bought Shayla some of the thickest, puffiest diapers Taryn had ever seen, and Taryn wanted so badly to try them herself. Her last class of the day had been cancelled, so she'd thought she would get home during Shayla's naptime, and could sneak in, grab one, hide them in her stash.

"Whatcha doing there, cutie?" she asked, stepping forward to get a peek at the girl's coloring book, one of her other senses answering the question for her. She sniffed, giggling to herself as she knelt down to give her stepsister's ruffled bum a pat, feeling a squish there, watch Shayla's eyes widen, her cheeks darken.

Had she not known?! Had she been unaware of the mess she was making in her pants until now?! It was possible her bashful reaction, hanging her head and staring at the fluffy rug she was lying on, was at being caught, but it seemed like more than that...

Shayla had made an attempt to tattle on Taryn for stacking the deck against her the first time she'd pooped herself, though it was almost as if the act itself, coupled with a day being cared for by a younger babysitter, had leeched away years of maturity from her... And, if that was the case, by now she was practically a newborn. It had been so easy for Taryn to claim Shayla had willfully filled her diaper before Taryn had gone to school, and Taryn had simply restrained her to the highchair to keep her from making a mess trying to hide the evidence before her babysitter could arrive, since Taryn hadn't had time to change her before heading to her first class.

"You knew you weren't supposed to do that," Shayla's father had scolded her. "If you're going to act like a spoiled little brat, then so be it... We're going to pay your sitter her extra to change your stinky diapers, and you'd better believe we'll be getting our money's worth."

Taryn still remembered how timid Shayla had looked, sitting there in her soggy diaper, pouting. "I-I'm gonna have to do that again?" she'd whined, not attempting to bargain her way out of it, or even throw a tantrum to get her way, just whimpering and sucking her thumb when her father told her yes.

Seeing her then, and now, Taryn couldn't help wondering if she'd had it wrong all along. She had liked diapers on her own, but this was so much better... Maybe she was meant to be a big sister, instead.

She could have taken a diaper; nobody was going to believe Shayla over her if the girl told them she'd seen her stealing one. And she was still curious to see what they felt like... But, for now, she was satisfied giving Shayla's another rub, feeling the mass inside squelch and spread at her touch.

"Shayla!" The stepsister both flinched at the sound of the babysitter's voice. "You know it's almost naptime! Why didn't you do this before your last change?"

"I-I was about to clean her up!" Taryn hopped to her feet.

"Oh, don't worry about it," the sitter said. "That's my job... Besides, when she does it this close to naptime, it's usually because she wants to stay that way, don't you, naughty girl? She wants a little alone time with her poopy diapers."

The look on Shayla's face told Taryn all she needed to know, as she shared a knowing look with the sitter. It seemed Taryn wasn't the only one who had learned to enjoy her new position in the family...