"It is not my bedtime!" Sierra fumed, stomping her foot angrily as she glared up at the giant little girl standing over her, all dolled up in a pretty, white, frilly dress. It was hard to remember that, back in the real world, Sierra used to babysit an older, yet much smaller, version of this girl.<br /><br />To her surprise, Madison actually agreed with her. "No, it isn't," she said. "But Mommy and Daddy are having a dinner party, and it's for grown-ups and big kids only. So I'm in charge of putting the little diaper baby to bed!" Sierra blushed as the girl poked at the padding sticking out from under her too-short dress, squirming in place as she bit back a useless protest that she wasn't actually a baby.<br /><br />Sierra squealed as Madison picked her up, carrying her easily over to the high chair set up on one side of the massive room, once just Madison's playroom, now Sierra's bedroom as well, along with the rest of the baby furniture Madison's parents had drug down out of the attic after bringing Sierra home. It added an extra level of humiliation to think that this all used to belong to Madison, and that it fit the much older Sierra perfectly now. It was even worse since it seemed to be the same as what Madison had used in the real world. Sierra even remembered some of it from when she babysat the girl! <br /><br />"Mommy let me choose your food for you, so I brought all your favorites!" Madison grinned as she plopped Sierra down in the chair, snapping the tray into place over Sierra's arms, pinning them down. "But we'd better start with a bottle!" She pushed a bottle of apple juice into the girl's mouth, and Sierra knew better than to try and resist. Reluctantly, she began to drink, draining the bottle, only for Madison to place three jars of baby food onto the tray. One was strained peas, one was banana, and the last was prune, none of which Sierra liked at all.<br /><br />"Open wide!" Madison grinned as she opened the peas. "And you'd better not spit up on me, baby, or Daddy will spank you for messing up my dress!"<br /><br />Sierra had no doubt that trying to explain that it was even partially Madison's fault for trying to feed her too much, too quick, as she always did when allowed to feed her, would fall on deaf ears, since Madison's parents were wrapped around the girl's little finger. In the real world, Madison had quite a bit of magical talent, and Sierra couldn't help but wonder if it was the same here. Magic didn't work the same in this dimension, as she'd discovered when trying to escape from the mechanical nursery she'd wound up in when first arriving here, but that didn't mean that it didn't exist.<br /><br />In no time, Sierra had green baby food splattered all across her face and dribbling down her chin, though there was still far too much that had made its way into her tummy. Once Madison had scraped that jar clean, she produced another bottle, forcing Sierra to drink it before moving on to the banana. Of the three, that was probably Sierra's favorite flavor in general, but she still wasn't a fan of the baby food version of it, and since it hadn't really been all that long since her and Madison's afternoon snack, she was already feeling full. But that didn't stop Madison from shoveling the mush into the girl's mouth as fast as she could.<br /><br />Sierra whimpered when Madison pulled out yet another bottle when that jar of baby food was emptied. "Please, I'm not thir..." she tried to protest, only for the nipple to be pushed into her protesting mouth. <br /><br />And, of course, once that was done, Madison was all too happy to unscrew the lid of the prune baby food. "Now for your dessert!" she smiled. "I know this is your favorite!"<br /><br />It was her least favorite, of course, but trapped in the high chair and at the mercy of the huge, sadistic little girl, she had no choice but to eat every spoonful, until she was sure she was going to burst. When she was finally done, Madison set the spoon down, leaving Sierra locked into the high chair as she wandered over to the dresser and began looking through the clothes. "Hmm, this should be fine!" she declared after a few minutes, carrying a pair of pajamas over and dumping them down on the floor beside the chair.<br /><br />"You're so messy!" she teased, taking a washcloth and roughly wiping Sierra's face. "You always whine when we try to put a bib on you, but we all know you need it! Look, you even got it on your dress!"<br /><br />Sierra blushed a little when she looked down to see that some of the baby mush had, indeed, dripped down onto the collar of her dress, despite knowing that was Madison's fault for feeding her so sloppily. "Mommy's not gonna be happy when I show her this!" Madison declared, yanking the dress up and off Sierra, leaving her in just her diaper and socks. She grinned as she reached out to check Sierra's diaper, pouting slightly when she felt that it was still dry and clean. Sierra had a feeling that Madison would be happy to run in to show her mother how 'Sierra' had stained her dress, but would somehow forget to mention the results of this check to the woman.<br /><br />"These PJs are cute!" Madison declared, picking up the shirt off the floor and shaking it out. Sierra had to admit it was. It was white, with a pink collar, and a large, pink bow emblazoned across the front, which matched the bow in Sierra's hair, and even the bows on the sides of her socks. It was also slightly short, Sierra realized as Madison pulled it on over her head, going down just to her belly button. It didn't even touch the top of her diaper, and she certainly wouldn't be able to hide her padding with it. Thankfully, there was a matching pair of shorts that went with it, but when Sierra bent down to pick them up, Madison grabbed her hand, yanking her away.<br /><br />"Hey!" Sierra pouted. "I want the rest of my pajamas!"<br /><br />"It's almost time for grown-up dinner, and I don't wanna be late," Madison informed her. "Besides, babies like you can sleep in their diapers, nobody minds!"<br /><br />Sierra wanted to point out that she minded, but she doubted it would matter as the girl picked her up and pushed her into the crib, raising the side and locking it into place. "Night-night, baby!" Madison waved, giggling as she gathered up her empty jars and bottles, and Sierra's dress, and scurried out of the room, leaving Sierra all alone.<br /><br />Sierra pouted, staring at the pajama bottoms just a few feet away, but completely unreachable. The crib was far too high for her to climb out of on her own. Madison's mother would usually leave it unlatched, so she could get out if she needed to, but Madison had locked it, trapping Sierra inside. The nightlight was faintly glowing beside the crib, but the room was still being lit quite a bit by the window, outside which Sierra could see kids playing in the front yards of the houses across the street. The sun was just barely starting to set, and yet she was stuck here, diapered and locked in her crib!<br /><br />Sierra had no idea who Madison's parents had invited over that evening, but she was sure it was some of the girl's friends and their parents. Of course, Madison's friends were all her age, some even younger. They were all about a quarter of her age, but they were out there, eating real food, after she'd been force fed a bunch of awful, gooey baby food! She rattled the bars of her crib, grumbling at the injustice of it all. Probably Madison's mother hadn't even said any of that about the dinner party being 'big kids' only. Madison had probably made all that up, then told her mother that Sierra had decided to go to bed early. That was just the kind of mean thing that little brat would do! <br /><br />Sierra stomped her foot sulkily, then gasped as she felt a trickle of warmth make its way into her diaper. It was hardly a surprise, after being fed all those bottles, and having held it for most of the afternoon. Madison's mother usually took her to the bathroom before bedtime, but of course Madison had 'forgot'. Sierra pressed a hand to her diaper, squirming and blushing as she continued dribbling into her diaper, but within a few minutes the dripping had turned into a full stream, and her diaper was soaked.<br /><br />Just great, she thought unhappily. Just when she thought it couldn't get worse, now she was stuck with a wet diaper! What else could go wrong?!<br /><br />It didn't take long for her to get her answer as her tummy began to grumble ominously. Food moved through you faster in this world, baby food especially so. Even worse, Sierra hadn't been to the potty that day, even after her breakfast oatmeal and big lunch. "Oh, no," she groaned, knowing that she didn't have long. She couldn't let this happen! She'd always made it to the potty on time, even when Madison's mother had made her use a real potty! Madison didn't mind changing her when she was wet, but she had no interest in dealing with poopy diapers, so even though she would tease Sierra, and sometimes make her wait until she thought she was about to burst, she always let Sierra run off to find her mother in time. Having a messy accident now would only undermine all Sierra's work trying to convince everyone that she really didn't need diapers!<br /><br />She shook the crib bars again, hoping they would somehow come loose and allow her to get out on her own. She groaned as a cramp hit her tummy, signalling that she had even less time than she'd thought. "Mrs. Case!" she called out, quietly at first, and then a little louder and more desperate. "Mrs. Case!"<br /><br />She whimpered, biting her bottom lip and waiting to see if there was any response.. Sure enough, after a few moments, she heard footsteps, and faint voice approaching. "Are you sure you heard something?" Mrs. Case was asking.<br /><br />"Yes," Madison replied. "And she was fast asleep when I left her!"<br /><br />Sierra's cheeks flushed, annoyed at that lie. Now it was either going to look like she'd been put to bed in a wet diaper, which Madison probably wouldn't admit to since it might get her in trouble for being supposed to know better, or that she'd had an accident while 'asleep' for whatever short amount of time she'd been alone here.<br /><br />"Maybe it was just a bad dream." Sierra froze as she heard that, her blush deepening. It was a voice she didn't know at all. She wasn't familiar with the next one, either, that agreed that was likely all it had been.<br /><br />Or the third, that suggested, "Maybe she's back asleep already."<br /><br />Had the whole dinner party come to check on her?! Sierra's eyes darted over to the pajama bottoms, still sitting so close, and yet so far away. Without them, anyone coming in would be able to see her diaper, and likely how wet and droopy it was! She fidgeted, unsure what to do. Should she call out again? It was bad enough being seen like this by Madison and her family! Now there were who knew how many strangers, too!<br /><br />She groaned as her tummy cramped again. She wasn't sure how much longer she could wait! She didn't want to do it in her diaper, but would she even have time to explain things after everyone got inside, or would she just fill her diaper while standing there in her crib, and then probably get a humiliating diaper change, and maybe even a spanking, in front of them all?! Even if she did manage it, she'd probably just get her diaper untaped and plopped down on her plastic potty in front of them all, then rediapered as she got praised for going potty like a big girl.<br /><br />Should she just stay quiet? She'd definitely go in her diaper, then, but at least it would be private. Of course, then she'd have to spend the rest of the evening, at least, in it. She had no idea what time it was, or how much longer it would be before Madison got put to bed. Maybe, if she was lucky, Mrs. Case would check on Sierra in the playroom after that, but probably not before. If Sierra fell asleep out of boredom before then, which was possible, the woman might just see that and leave before checking her, and Sierra would wind up spending the entire night in a full diaper, which would look like it happened while she was sleeping according to Madison's story!<br /><br />"Stupid Madison," she grumbled to herself, hardly able to believe she was being faced with such a terrible, humiliating decision, all because of some five year old girl. What was she going to do?! Bedtime was supposed to be an easy, stress-free time! But as she squirmed in her soggy diaper, still trying to make up her mind, this one was anything but that.<br /><br /><br /><i>Awesome ink art done by Fluxom, who can be found <a class="external" href="https://www.deviantart.com/users/outgoing?http://www.furaffinity.net/user/fluxom/">here</a> or <a class="external" href="https://www.deviantart.com/users/outgoing?http://influxom.tumblr.com/">here</a>! Story by me!</i>