This is an idea I had for a quick little St. Patrick's Day story. It's a sequel to  Birthday Fun and Games"N-Now, Santa," Sierra gulped, squirming as she watched him approach, feeling utterly helpless, despite the wand she was clasping in her hand. "Th-This isn't what it looks like!"He paused, looking her up and down, silently commenting on how ridiculous that seemed. And, honestly, Sierra couldn't do much to dispute that. She blushed, glancing down at herself as well.There she was, standing there in a crop top that had once been purely white, though was now, like her face, smeared with frosting, a huge, pink number 2 on the front, with the words 'Cake Please' emblazoned over top of it in gold glitter, short enough to leave the diaper cover underneath on full display. It was white as well, with lace and pink bows around the legbands, and a matching 2 on the seat, though this one was accompanied by the words 'Birthday Girl.' To top it all off, she had a pink bow in her hair, a tiny, plastic tiara incorporated into the design, bridging the two loops.But that wasn't the worst part, not by far. That would be what was unseen, underneath the diaper cover. As the name would suggest, she was very heavily diapered. Even worse, however, that diaper was very obviously filled the the brim, lumpy and bulging and straining against the cover. She blushed furiously as he reached out, giving her padded, droopy seat a pat, confirming what he had no doubt already seen, assuming he wasn't blind."I-It isn't!" she reiterated, stomping her foot. "I-I didn't mess myself!""Sierra," Santa spoke up finally, with a heavy sigh. "I know that you know better, young lady. Lying is very naughty.""I'm not lying!" Sierra huffed."Well, then," Santa said, plucking the wand out of her hand. "Why don't you tell me what really happened, then? And tell me the truth, young lady! This is not the night for fibs."Sierra really wanted her wand back, to get her out of this silly outfit, and especially the very squishy diaper, but she could tell Santa was already getting fed up with her, and she knew better than to push him. "O-Okay," she agreed. "Well..."-----------------------------------------------------In a way, it had started earlier that day, but, really, she'd been laying the groundwork for it for a couple weeks longer, ever since her birthday earlier in the month."You really don't have to get me any presents," she told her friends. "All I want is a party." That should have been easy enough to pull off, except that she had one, rather large, condition. "I don't want to have it on my birthday. I want to have it on Christmas Eve."It was a selfish thing to ask, she knew, but that was why she'd made it what she wanted for her birthday. Besides, she was having it late, after most of the Christmas Eve festivities would be over. She told her friends it was because she was busy until then, so it was the best night to have it, but, really, there was more to it than that.Sierra did not have the best history with Santa. She wasn't sure how it kept happening, but it felt like every year, she had some kind of a run-in with him, one that more often than not ended up with her spanked and in a messy diaper. If she had her party on Christmas Eve, it wouldn't give him a chance to show up, which meant no presents, sure, but also no chance of that happening.To make things even easier for her friends, she was setting everything up herself, so all they had to do was show up. Despite her best efforts, knowing it would be hard to find anything last minute, she still ended up forgetting some decorations, and having to go out on Christmas Eve, not long before the party, to buy stuff.Even that wasn't all bad, however. It was a nice night, chilly, but not freezing, the perfect temperature to walk around and look at the lights as she made her way back home. They really were beautiful, twinkling in the cold night air, getting her in the mood for Christmas, even though she was trying everything in her power to bypass it. It was on her walk that she noticed someone else, out there on her own. Someone even smaller than her, as hard as that was to believe, at least to be out by themselves at this time of night, and on Christmas Eve. "Are you okay?" Sierra asked, walking over to the little girl. "Are you lost, sweetie?"But, when the girl turned around, Sierra realized this wasn't a stranger after all, nor was it a little girl. Not really, anyway. "Sierra!" Nellie grinned. "Well, fancy meeting you here!"Sierra's heart thumped as she stared down at the little vampire girl. "N-Nellie?!" she squeaked."Aww, did you get me a Christmas present?" Nellie smirked, snatching the bag out of Sierra's hand. "You shouldn't have!""Nellie, you give that back right now!" Sierra ordered, hands on her hips, trying to summon all the authority she'd felt when she first met the girl, and thought she'd been hired to babysit her, as opposed to the humiliating way things had ended up with her."Is it someone's birthday?" Nellie asked, digging through the bag, ignoring her. "Sierra! Is it your birthday?!""Not really," Sierra admitted. "Just give it back!"Nellie rolled her eyes. "Okay, okay! You're no fun, you know that?" "Merry Christmas, Nellie," Sierra told her sternly, watching her float away, sulking, before going back on her way to finish decorating. She thought that would be the end of it, but she should have known better. Nellie loved playing games, after all. Her first guests were a few minutes early, so she was happy to let them handle answering the door while she put the finishing touches on everything. She really couldn't blame them for what happened. It wasn't like she could expect them to know better."Oh, you poor thing," she barely heard one of her friends say. "Come in out of the cold! Do you know your Mommy or Daddy's phone number?""No!" Immediately, Sierra knew what was happening, but it was too late to do anything about it. She turned, horrified, to see Nellie step inside, more than happy to take advantage of the invitation."Don't mind if I do," she giggled. "Hi, Sierra!" she waved. "Nellie, you get out of here right now!" Sierra pointed at the door. Her friends were probably going to think she was a monster, forcing what seemed to be a twelve year old girl out onto the street, but she knew what Nellie was capable of."That's not very nice at all," Nellie smirked. "I thought you wanted a party, Sierra! You have no idea how hard it was to get everything prepared for you at the last minute like this, on tonight of all nights!"It probably hadn't been that hard at all, Sierra thought, watching the girl sweep in, all eyes turning to her in confusion over what was going on, giving Nellie the perfect opportunity to return that look and use her glamour on them, putting them under her control. "Now, who wants to get the birthday girl ready? I found the most adorable outfit for her!"Her guests were all Muggles, so Sierra knew she shouldn't use magic in front of them, but she wasn't sure what choice she had. She dove for the hidden drawer in the coffee table where she kept it, only to be pulled away by one of her friends as soon as it popped open."Thank you for showing me where that was," Nellie smiled. "That makes this so much easier! Now, go take care of her."Without the wand, Sierra had no chance of overpowering her friends, or keeping them from stripping her down, taking away her precious big girl panties, and taping her into a big, bulky diaper, covering it up with the humiliating outfit that declared so proudly that this was her second birthday. Once it was on, however, there was one more piece to it."Pl-Please, don't do this," she begged, cheeks burning as she stood there, trying to make the tiny shirt long enough to cover her poofy Pampers. Her pleading did nothing to stop her friends from locking a collar around her neck, then attaching a T-shaped bar to the back of it. A cuff was placed around each wrist, which was then latched to the other two ends of the bar, holding her hands up and to her side, unable to even make an attempt to tug on her mortifying clothes.She was marched out to the living room, where Nellie, and, probably, mostly the rest of the party-goers, had been working on something else. "There she is!" Nellie exclaimed. "The birthday girl!" She floated up, booping Sierra on the nose, the witch unable to do anything about it except glare. "I came up with a special game for your birthday!" she grinned. "Do you want to know how to play?""No!" Sierra growled. "I want you to give me my wand back and let me go!""Funny you say that," Nellie said. "That's what the game is all about!"The crowd parted, letting Sierra be marched to the table they'd set up. A huge sheet cake was sitting on it, beside a whole array of hairbrushes and paddles of various shapes and sizes. A sign on the table declared, 'Give the Birthday Girl Cake and Spanks!' and the cake itself said, 'Happy 2nd Birthday, Sierra!'"I am not two!" Sierra whined."Trust me, Sierra, you're going to be very grateful that you're only turning two by the end of this," Nellie told her. "You wanted your wand, right? It's down there, under the cake, on that end." She pointed to the right side of the cake. "Why don't you see if you can call it?"Sierra glared down at her, wondering if this was a trick or not. The restraints were holding her arms still enough that using her wand would be difficult, but not impossible. "Accio wand," she said, flexing her fingers. She saw the cake move, ever so slightly, but it was too heavy, the wand not quite able to squirm free. "Accio wand!" she tried again, with the same results. If she'd had her wand, she'd probably be able to pull it off, but if she had her wand, this wouldn't be a problem in the first place."Perfect!" Nellie grinned. "Now, Sierra, I know you're not very good at games, and it's your birthday, so I didn't want to make it too hard for you. So all you have to do is stand there! Do you think you can handle that? And then everyone else gets to take turns!"She picked up a piece of cake from the left side with her bare hands, then tugged out the back of Sierra's diaper and stuffed it inside. Sierra gasped, blushing as she felt the frosting smear across her bottom, and then the cake press against her as the diaper snapped back into place. Nellie took a moment to consider, then picked up a pink, heart shaped paddle, and delivered two swats to the fresh lump in the back of the squealing witch's pants."Cake and spanks," Nellie gave Sierra's squirming, padded bottom a pat. "Everything a birthday girl needs!""Nellie!" Sierra stomped her foot. "This isn't funny!""Oh, it's pretty amusing," Nellie countered. "The game is over once you can get your wand out. All right, everyone, line up!"Sierra gulped, watching her friends mindlessly line up to humiliate her, one by one. She knew it wasn't their fault, and that there was nothing they could do about it, but that didn't make it any less embarrassing for each of them to dump another slice of cake down her quickly filling diaper, then smash it around with a pair of spanks. Everyone knew what was happening, of course, that she wasn't using her diaper, and yet it was still absolutely mortifying to feel it grow bigger and bigger, in front of everyone.Sierra didn't think there was any way the whole cake was going to fit in her diaper, though it got much closer than she imagined. Even through the padding, and the cake, the spanks were starting to add up and really hurt by the time Nellie called for a pause in the game. She wiggled her bottom, almost wishing she could reach down and rub her sore backside, until she felt Nellie start to poke and prod at it instead, making her blush as the contents shifted, at least as much as they were able to. "Boy, you really filled this one up, didn't you?" Nellie teased. "And in front of all your friends! Such a naughty girl!""Nellie!" Sierra glared at her. "You know I didn't! And they do, too!""Do they?" Nellie asked smugly. "They remember what I want them to remember, Sierra."Sierra gasped, watching her friends start whispering to one another, staring at her. "Can you believe she invited us all over to watch her do this?" she heard one whispering to another."Nellie!" she whimpered. "You can't do this!""But you lost the game, Sierra," Nellie told her. "You can't get your wand, can you?" Sierra tried again to summon it, but everyone had taken cake from the other side, so it was still covered. "There have to be consequences for losing, or else there's no point in playing. Maybe I could be convinced to change their memories some more, to forget about this whole thing, though."Sierra squirmed in place, trying to find some way to hide her bulging diaper. "Wh-What do you want, Nellie?" she asked."Your wand," Nellie grinned. "Give me your wand, and they'll all remember this as a perfectly normal, and probably pretty boring, party.""Nellie! You know I need that!" Sierra protested."It's up to you," Nellie shrugged. "Why don't I send them all home? I have other things to do tonight, too. You can sit here and think about it."In no time, Sierra was all alone, her wand inches away, but totally unaccessible. The way her arms were being held, there was no way she could bend that would let her reach down and grab ahold of it. She groaned in frustration, stomping her feet, feeling tears spring to her eyes as she pondered what she was going to do, how she was going to answer Nellie when she returned.There was, however, one thing she hadn't considered. It took her an embarrassingly long time to think of it. It was only cake, after all. She was in an awkward position, sure, but it was much easier to get her mouth to the cake than it was to get her hands to it.She dropped down to her knees, pushing her face into the chocolatey goodness. Most of the cake had ended up in her diaper, but this was the first time she was getting to taste any of it, and it was surprisingly yummy. It was hard to totally enjoy it, of course, when she couldn't use her hands to try to keep herself from making too big of a mess, or wipe her face free of the frosting she was smearing across it, and then her shirt as she raised herself up further, craning her neck to eat more of her wand free.As delicious as it was, her tummy was starting to feel almost as full as her diaper by the time she was satisfied. "Accio wand," she tried, watching it wiggle, making her worry there were still too many crumbs, before it shot up to her hand. Covered in cake, and a little spit, and with her hands being held as they were, she dropped it the first time, but she was able to summon it from the floor, and keep ahold of it this time.She wasn't out of the woods yet, however. She knew how Nellie was, and, even though she cheated all the time, if she thought anyone else had, she'd throw a fit over it, and she might consider what Sierra had done breaking the rules. Sierra needed to free herself and prepare for her return.It was almost harder, now that she had the wand. Her range of motion with it was extremely limited, and she was tired, humiliated, and very full. She dropped her wand another time before she finally fire off a spell to poof away the restraints, leaving her completely free to deal with the aftermath.Unfortunately, that was when she heard the scuffling sound from the chimney behind her, and turned to find Santa stepping out of it, staring down at her, covered in cake, diaper drooping heavily inside its cover."That is quite the story, Sierra," he said after a long moment. "But, like I told you, you know better than to lie.""I didn't!" Sierra whined. "You should know, right? You see everything!""Most days, yes," Santa agreed. "But tonight I'm a little busy."Of course. If only she'd had her stupid party some other time! She squirmed, blushing and looking at her wand in his hand. "I-I guess you can't wait for Nellie to come back either, huh?""I can't," Santa nodded, kneeling down in front of her. "Sierra, you were on the nice list this year, until now. I'd love to give you your wish, because I can see how badly you want it, but telling me such a big lie makes that very difficult.""It isn't a lie!" Sierra insisted once more."Sit down, Sierra," he snapped, and, automatically, Sierra obeyed, wrinkling her nose as her well-spanked bottom sank into the cake and frosting. "I want you to take this," he pulled a scroll of paper from his pocket, along with a pack of crayons. "You're going to write lines for me, little lady. If you can fill that up as well as you did your diaper, you can remain on the nice list for this year. And, to make sure you don't cheat, I'll take this.""Santa!" Sierra sniffled, watching her wand make its way into Santa's bag."It will be under the tree, if you do what I asked," Santa told her. "If not, I'll take care of it until next Christmas.""I need it now!" Sierra pouted, staring down at the paper, unrolling it and blushing bright red as she saw the words written at the top, that she was expected to repeat underneath. 'I will not lie about pooping my diapers.' "I didn't!" she huffed, but by the time she looked up, Santa was gone. She stared down at her diaper, wishing there was time to change it, or clean herself up so she didn't look so much like she'd just gotten done with a smash cake at her second birthday party, but she really didn't have a choice now. Whether she'd earned the lines or not, she had to do them so she could get her wand, to either force Nellie to change the memories of all her friends, or to give to the vampire girl, not that she thought that was a good idea. Either way, she needed the wand now, not in a year!Groaning, Sierra bent forward, taking a crayon out of the package. 'I will not lie about pooping my diapers,' she wrote. "I didn't!" she repeated, hitting the floor beside her angrily. Not this time, anyway. She couldn't say that she hadn't done it before, though. She blushed, thinking about those times, about how she'd been asked if she needed a change, or if she'd made it to the potty on time, and how she'd been too embarrassed to tell the truth.She squirmed in her full diaper, the memories almost as embarrassing as it was, and returning to her again as she repeated the line, and again, and again. And, just when she thought she was almost done, she unrolled the paper and realized it just kept going, and going, and going...She wasn't sure when she fell asleep, but she must have, since she was woken up by the sound of giggling. "Well, well, well," Nellie sneered. "What happened here?"Sierra blinked and yawned, staring up at Nellie, still not sure how she was going to respond. As she looked up, however, she realized she had to look further, and further, far more than she should have had to."Oh, no!" she squealed, turning her gaze downwards instead, at herself. Sure enough, she'd shrunk, turned even tinier than usual, her arms and legs chubby with baby fat again. Her cake, and the humiliating outfit, was no longer an insult, it was the truth. "Santa!" He must have thought this was her biggest wish, that this whole party was her way of telling him that what she wanted was to be two again!"Sure, Sierra, I bet that's it," Nellie rolled her eyes. "I think you managed to get to your wand, and then tried to shrink yourself out of your restraints, and had a little accident.""I didn't!" Sierra insisted."It's hard to be mad," Nellie shrugged, pinching Sierra's cheek. "You're so cute like this! Now, why don't you be a good little girl and tell me where your wand is?""Santa has it!" Sierra told her. She hadn't gotten anywhere close to filling out the scroll, either, so she had a bad feeling she shouldn't expect any other presents under the tree from him, not until next year. "Sierra," Nellie easily picked Sierra up under the arms, lifting her into the air and staring her in the eyes. Sierra stared into her eyes, feeling a little dizzy, like she was falling into them. "I'll give you one more chance to give me the wand, and maybe I'll let you use it to undo this before I take it.""I don't have it," Sierra answered, the words almost falling out of her mouth."Oh, my God," Nellie giggled. "You silly little thing! You regressed yourself right out of your resistance to my glamour, didn't you?"Sierra tried to shake her head, but all she could do was keep staring into Nellie's eyes, feeling all her other thoughts fading away."Well, I'll just have to see if I can find it on my own," Nellie shrugged, setting her down and patting her on the head, blushing as she realized she felt a warmth in her pants, one that had spread far enough to make it obvious it had been going for a while."Wh-What did you do to me?" she sniffed, pawing helplessly at her diaper."Simple," Nellie answered. "I made you forget all that pesky big girl stuff you don't need anymore, like how to read, or write, or use the potty. I let you think like a big girl, and talk like you, because I thought it would be fun, but if you even think about trying anything, just know I can make your forget about those, too, and then you really will be a toddler."Sierra looked under the tree, at the packages she knew she'd wrapped and labelled, but the names she'd written were now completely indecipherable. "Nellie!" she wailed, tears filling her eyes. "This might be nice," Nellie mused. "If people think I'm helping out with my little baby sister, they'll be even more likely to help me out. Even if I can't find your wand, you might be very useful to me. Not to mention a lot of fun to dress up!""B-But I'm not a baby!" Sierra insisted. She certainly felt like one as she was led by the hand to her neighbor's house, still covered in cake, so Nellie could ask for a few spare baby diapers for her, since all the stores were closed for Christmas. And again, as she was changed into it by the little vampire, and, in no time at all, had made it nearly as full as the one she'd been taken out of, all by herself this time, with no hope of stopping it once she felt the mush begin oozing out into her padding."Uh-oh!" Nellie sniffed the air. "Did someone have an accident?"Sierra's automatic answer to that was always no, but, as she opened her mouth to say it, she remembered the lines. She gulped, blushing, and admitted, "Y-Yeah."There was no point denying it now. Despite what Nellie had said, she already, essentially, was a toddler, and a Muggle one at that. Unless she could find another witch or wizard to help her out, or she could somehow convinced someone to sell a two year old a wand, there was no way she'd have enough magic power without her wand to undo the regression. She was going to have to wait until next Christmas, and hope she stayed on the nice list the whole time.That last part probably wouldn't be that hard, really. How much trouble could she really get in like this? And, she supposed, it did solve the problem of what her friends remembered about the party. What would it matter if they saw her have an accident in the middle of her birthday party now? That probably happened to most two year olds."I can't wait until tomorrow!" Nellie gushed. "I'm going to buy you all the cutest outfits, and the thickest diapers! I'm too old for dolls, but a baby sister is so much better!"Sierra squirmed in her full diaper, knowing this time she couldn't blame it on anyone but herself, and that she wasn't going to be able to do anything about it on her own. "Y-Yeah," she forced a smile, determined to be a good girl, both to prove to Santa she deserved her wand back, and to keep Nellie from having any excuse to remove the last few adult faculties she had left. "I-It's going to be so fun...".