The theater was packed as people were filing in to take their seats at the theater. The place looked absolutely pristine, like the place had taken hours to clean and Polish by hundreds of workers (when it took only one woman and a little girl who was just their for Isabella's amusement).

Sierra's friends had gotten front row seats, while not exactly the best seats in the house (the booths were the best seats) but they could see the entire stage from it.

As the crowds began to die down, the standard voice intercom telling people to turn off their cell phones and not to take pictures or photos. After another 5 minutes of waiting the show had begun.

The band began to play and the lights went up. As the curtain rose, and the dazzling magician stepped down from the stage, Sierra realized that this was..... oddly familiar? She couldn't figure out why though.

After the magician had both her wand and hat introduced, she began the second part of her introduction.

"Aaaaaand now! Introducing the Astounding Isabella's lovely assistant!"

A trap door full of smoke opened up and a figure began rising out of the shadows. Coming into clear view, the figure was a petite little girl with blonde hair that was tied in black ribbons. Her attire was like the magician's except for one very noticeable exception. She wore a massive, red diaper that wasnt hidden in the slightest. One the front of it said "Mommy's little assistant" in bright pink cursive. There was also a yellow pacifier in her lips, and looked like she was suckling it thoroughly.

That girl looked very bashful as the audience laughed at her appearance. There was the occasional sigh of adoration, but they were drowned out by uproarious laughter.

This little girl looked awfully familiar.... it looked like.... Sierra?

"I know everyone," Isabella announced. "She's a cutie." Isabella patted her assistants bottom, causing the assistant noticeable discomfort. "Now it's time to start the show!"

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Sierra squirmed a little in her seat, glancing over at Cordelia and Belladonna beside her. They seemed to be enjoying themselves quite a bit, and if they found this strange, they didn't give any indication of it. Then again, at the first sight of the assistant, Sierra had been too busy blushing and ducking her head down to notice their reactions.

It had to be her imagination. There was certainly something familiar about the assistant, but it couldn't be any more than that. The sight of the thick diapers brought back too many memories, especially with the girl wearing them looking so similar to her, but Sierra was sure that was all it was.

She had to admit, the girl did look pretty cute, standing there next to the magician. The wardrobe choice seemed a bit strange, but maybe that was because Sierra had so many associations with them, and was hoping her friends wouldn't be thinking of any of those, if they knew about them.

At first, she felt sorry for the assistant, but she reminded herself this was just part of the show. Maybe the diapers would figure into one of the tricks, or maybe it was just to emphasize the height difference between the two. Or maybe it was just to make the assistant look cuter, which, once Sierra got beyond her own hang-ups about them, she had to admit they did. She settled back into her seat a little and let herself enjoy the show, even giggling along with the rest of the audience at some of the adorable antics of the diapered girl, convincing herself more and more as the show went on that she didn't actually look like her after all, and she was had just been silly to think otherwise.

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The show itself was rather impressive. Most of the tricks in the show were actually rather impressive and tense. A majority of the tricks involved the assistant being put in some grave peril before being rescued with a trick from Isabella.

Then there was the trick whrte the assistant almost fell into a bed of spikes, but then she started floating in midair, Isabella holding her wand steadily, appearing to have stopped the fall. The assistant wide eyed and convincingly fake crying, seemed to have wet her diaper as she floated facing the cieling. The audience laughed at the assistant's display.

Isabella took notice and held out her arm. After a quick gesture, it had a full deck of playing cards.

"For my next trick, I need a volunteer!" Isabella pointed at Sierra. "How about this young woman right here!" A spot light gently faded in over Sierra. The audience applauded, encouraging Sierra to stand.

Isabella walked over to Sierra and held out the deck of cards. "Please, my fair lady, pick a card. Any card."

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Sierra and her friends had expected a typical silly Muggle magic show, but Sierra couldn't help finding herself getting engaged in the show. She wasn't sure if it was her feeling a connection to the girl who looked kind of like her, though she was sure it was less every time she looked at her, or if it was just the showmanship.

She was hoping Cordelia and Belladonna were enjoying it genuinely, too. It seemed like they were, but it was hard to tell for sure, and she didn't want to give in to her excitement too much if they were just laughing and watching along ironically. They really did seem like good tricks, though, and Sierra wasn't sure how a lot of them were done. Then again, she didn't know a whole lot about Muggle magic shows.

She couldn't help feeling a little ad for the assistant. Of course, she knew it was all just part of the act, but the girl seemed genuinely surprised, and even scared at times. She was definitely surprised to see her apparently wet her diaper, but she knew she shouldn't have. Probably this next trick, whatever it would be, was the reason for the strange costume in the first place. Or maybe they were setting up one for even further down the line.

She blushed a little as the spotlight was shone on her, glancing around at her friends. She didn't like being the center of attention, especially in front of all these people. She was glad she didn't have the assistant's job!

People were already staring at her, though, and saying no now would be even more embarrassing, probably, than going along with this. She got to her feet, staring up at the magician, feeling a bit intimidated by her height. She looked at the cards, trying to figure out which one she was supposed to draw. She really couldn't tell, and didn't want to stand there any longer than she had to, so she just grabbed at the first one that caught her eye, then changed her mind at the last second and took the one next to it. She held it bashfully for a moment before asking, "What should I do with it now?"

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"Well, my good friend, I want you to hang on to that card, but don't show it to me!" Isabella got up and turned around towards her assistant. Isabella cast a sheet over the assistant's lower half before standing her back up.

"Now tell me my good woman," Isabella ripped away the sheet, revealing a new clean diaper with a the card Jack of Clubs on it. It was the right card of course.

The audience applauded at the trick. Isabella winked at Sierra. The cards had now sharpie marker written on it that Sierra didn't notice before.

Keep the card. Souvenir.

Isabella the Amazing

The rest of the show continued on into the night. As the show ended, Isabella was shaking hands and signing autographs in the theater's lobby when Sierra walked by.

"Hey there!" she greeted the young woman warmly. "Did you enjoy the show?"

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Sierra clapped and giggled as the trick went off without a hitch, showing her card to everyone to prove that the magician had guessed correctly. She still thought that the assistant's costume was strange, but she was sure it was just because of her own experiences.

She was glad to be able to sit back down and get the spotlight off of her. She blushed a little as her friends looked at her, and Cordelia told her she'd done a good job. Sierra just nodded, though it wasn't like she'd done anything, just taken a card. She still wasn't quite sure if they were being serious, but they really did seem like they were enjoying the show. She slipped the card into her purse, thinking that it would be nice to have something to remember this night by.

When the show finally ended, she was surprised at how late it had gotten. Time had really flown by! She was wondering if Cordelia and Belladonna were going to want to head home, or if they'd want to grab a bite to eat first, when she was stopped on her way through the lobby.

"Oh, h-hi," she replied bashfully. Even though she had never really heard of this magician before, not that she kept up with Muggle magic, she still felt like she was meeting a celebrity after just witnessing her show. "I did! I mean, I-I don't know a lot about magic, but I thought it was pretty cool!" After a moment, she pulled the card back out of her purse. "And thanks for this!"

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"No," Isabella said. "Thank you. You really have quite the knack for performance. If you ever want to learn how I did anything, you let me know." Isabella waved goodbye before heading back stage to a certain assistant.

*whack*

*whack*

*whack*


Sierra's head and hands were locked in a stockade, and her feet were spread apart in shackles. She was getting ready for bedtime, so she now wore a white bunny pair of ears and a tight white t-shirt with a bunny logo. She wasn't wearing pants or a diaper. She was in the middle of a spanking session. It wasn't scheduled for today, but Isabella thought it necessary.

Isabella walked over to Sierra as the spankings were ending. Isabella titled Sierra's chin up toward Isabella. Let's see how she acted after 50 swats.

"Now, Sierra." Isabella said, sounding like a disapproving parent. "Why do you think you were punished tonight?"

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"Okay," Sierra nodded. It seemed a little strange, since she thought magicians weren't supposed to give away their secrets, but that just made it a nicer offer.

As she hurried back over to her friends, she giggled with them over it. Nice or not, it was still funny for a Muggle magician to be unknowingly offering to teach an actual witch some of her tricks.

She really hadn't been sure what to expect from this vacation, since she usually just went home wherever she had some time off from classes, but it was turning out to be a lot of fun. Maybe she'd have to come back sometime after she graduated. She might even stop by to see the show again! She smiled as she headed off for a late night snack at the little diner across from their hotel, curious to see what the rest of her vacation would bring.

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Sierra whimpered, trying to pull free from her bondage and more importantly the paddle that had been working on her exposed backside for what felt like an eternity. She had still been sore from the fight earlier that day, but now her bottom was practically on fire!

Finally, it stopped on its own, but before she could try to enjoy the relief, Isabella marched up beside her. She blushed, trying to act defiant towards the person who had put her here, and made her perform in front of all those people, including her friends and herself, in diapers, and took away her magic, but it was hard to do much more than sniffle and cry.

"I-I don't know!" she whined, shuffling uncomfortably. "I didn't do anything!" She wanted to suggest it was because Isabella was a meanie, but that didn't seem like the best idea in her current situation.

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"You tried to resist my doing my tricks on stage five times." Isabella explained. "So you got fifty spankings. Thankfully, people loved the show," Isabella smirked at Sierra again. "Including you! Your clone was so well behaved and thankful for a good show." Isabella began unlocking Sierra's restraints, the paddle still floating very close to Sierra's bottom. "I think I like her better."

Isabella picked Sierra up, supporting her weight beneath her legs like a toddler and walked over to the exit. Isabella knocked three times, and then entered.

Instead of exiting the theater, they entered a very different room.

The walls were painted pink and the carpet was soft and fuzzy. The room had the infamous chnaging table next to the door with a refrigerator next to it. A crib sat in the corner, too high for Sierra to crawl out of. There was also a makeup mirror in the corner with stage lights and of course a high chair. Then there was the trap door, Sierra had no die a where it went.

"This place will be your world when we're not on tour. It's in another dimension, so don't bother trying to leave without me. Understand?" She placed Sierra on the changing table, her hand flicked on of her but cheeks. "When I tell you something from now on, answer, 'Yes mommy.' Understand?"

The little blue bird which discovered Sierra's magical ability before was now hovering close by. After a few tweets, Isabella frowned.

"Hmmmm...." Isabella snapped her fingers, the restraints came out and grabbed Sierra's wrists and pulled them into position this time, even lifting Sierra's bottom into the air and a new restraint holding Sierra's head forward, evidence that she held back during the duel.

"My little friend says it still senses magic potential in you." Isabella quickly applied baby powder to Sierra's bottom began strapping on a new diaper that read 'Soon to be full.'

"You might need some milk before bead." Isabella walked over to the fridge and pulled out a bottle of milk, began inserting it to Sierra's mouth. "This dose is a bit stronger, but it also weakens your ability to control your bladder, so we'll have to accelerate your training." Sierra could now see a list on the other side of the wall. She couldn't read read what it said, but it was long enough to reach all the way from the cieling to the floor.

It was titled "Day 1."

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"That's not fair!" Sierra whined, squirming as she was carried off. "I didn't know what was going on!" Isabella had been doing some pretty crazy stuff, mostly to Sierra, and waiting until the last moment to rescue her. It made for a more dramatic show, but it was only natural to try to defend herself!

"And if you like her that much, why don't you use her?" she pouted. If Isabella was capable of making doubles of people, then why did she even need Sierra in the first place? But she seemed very determined to keep her now that she had her.

She looked around at her nursery, fidgeting in Isabella's grip, at least until she was put back on the changing table. Even with her magic, it would be difficult to break out of here and back to her own dimension, but without it, she was stuck. Her fear that her friends wouldn't figure out what was going on had been realized, and having seen her double herself, she could tell how much like her it looked. Would anyone else be able to notice? Even if they did, how would they figure out when and where the switch had been made so they could rescue her?

"Yes, Mommy," she sighed obediently, gasping as she saw the bird that had started all of this again, and the changing table came to life to hold her in place. She shook her head, remembering what had happened after the last bottle and not wanting to do that again already. "I-I don't have any more magic!" she promised, worrying even more about this training and discipline Isabella kept talking about. "I promise, I don't need another bottle!" But she had a feeling her protests weren't going to matter. Her fate was up to Isabella now, and it seemed like she knew exactly what she wanted.

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Isabella managed to insert the bottle into her mouth, smiling as Sierra began to drink it. As Sierra drank, Isabella was already preparing another diaper for Sierra to wear.

"Sierra, it amazes me that you still insist that you aren't a baby." Isabella said taking away the bottle. "Of course, that's why I'm here now. You need someone to tell you how to behave. Understand?" Isabella rubbed Sierra's full tummy softly, Sierra being forced to look at her diaper again. "Now come on and use the potty. It's bedtime, and you have a long day ahead of you."

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"But I'm not a baby!" Sierra pouted, though even she found that hard to swallow as she squirmed there on her changing table, tummy already full from her bottle and ready to fill her second diaper of the day. If she could have looked away from her diaper, and its humiliating text, she knew she would see a room that was definitely suited for a baby rather than a big girl.

She had no idea how much magic could possibly be left in her, or what she could hope to do with it without her wand. She was tempted to give it a try, but she would at least need her hands, and preferably some privacy. She was sure there was no way Isabella was going to leave before she messed herself, which would make sure that whatever power she might have would be gone.

Maybe if she waited long enough, Isabella would give up and just leave her there for the night? But with as fast as the pressure in her bowels was building, she doubted she could outlast the magician, and even if she did, she wouldn't have long to experiment before she wound up having an accident anyway, and then being stuck in her poopy diaper all night. Not to mention that her resistance might earn her yet another spanking.

So she sighed, blushing as she gave in and began to mess herself. She tried not to think about what she was doing, which was hard since she was being forced to watch it as well, telling herself it was for the best. At least this way she knew she'd get changed quickly, she thought with a defeated sigh. That was about the best she could hope for at the moment.

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Isabella observed Sierra's full diaper.

"Good girl, Sierra." Isabella said. "You can be taught." Isabella gave Sierra a little pat on the head before beginning to change her.

After the new diaper was on Sierra's bottom, Isabella walked over to the diaper chart that hung on the wall. "Three diapers in less than half a day!" Isabella commented. "You're off to a great start!"

The restraints loosened on Sierra's limbs and Isabella picked Sierra up and carried her over to the crib. The cribs bars were too close together and too high for Sierra to get out of. Hanging above it was a mobile of stars, hats and wands. Sierra could even see that the crib was built so it could rock back and forth.

"Now since you were a good girl and used the potty during the show, I won't give you a pacifier tonight." The bars lowered themselves as Isabella placed Sierra inside, and then rose back to their original height. "Also, like I mentioned before, you won't be able to control your bowls for a day or two, so try to take in what that feels like and emulate it during your discipline."

Isabella walked back to the door, the lights in the room grew darker. "Get some sleep, little girl. Understand?" Isabella waited for Sierra to say was written on her diaper.

Yes, Mommy

Isabella smiled and walked out of the room, the doors lock clicking behind her. As Isabella left, the crib began to sway back and forth, and the mobile began to play a soothing piano song. In fact, Sierra probably realized it had hypnotizing powers as she began to feel extremely sleepy.

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Sierra watched the crib bars slide back upwards, trapping her inside her new bed, blushing and squirming as Isabella reminded her that she really was going to need her diapers, at least for the next couple days, and whenever she was fed that bottle. And she was expected to act like that even once the effect had worn off? Not that she thought it was all a joke after all the effort the magician had obviously put into the nursery, but it still surprised her a bit to see how much Isabella was expecting her to slip into this baby role.

But how much of a choice would she really have? Fighting back was mostly useless, since she had no magic, and was much smaller than Isabella, making a physical resistance much more difficult. Nobody knew she was here, or that they even ought to be looking for her. And Isabella clearly was planning to keep her in these big, thick diapers, and expected her to use them.

It took her a moment to realize what Isabella was waiting on. She blushed, remembering the words she'd seen on her new diaper, as she was forced to watch her change. She had a feeling that was part of Isabella's control over her, too. Whether it was really part of some hypnotic thing, or just a reminder that she was the one in charge, she still wanted to show some rebellion and say the opposite, but was too afraid to do anything but parrot, "Yes, Mommy."

And just like that, she was alone. She felt the crib start to rock beneath her as the mobile turned over her head. She had no idea what time it was, but she knew it couldn't be that late, despite how drowsy she suddenly felt, so she tried sitting up. The room was dark, but she could still see enough to know that even if she could get out of the crib, there was no escaping any further than that. She struggled to stay awake, wanting to do one thing to resist Isabella and prove she wasn't just a baby, but the music swirling around in her head just made her feel more and more sleepy.

Who knew what else it was doing to her? She had no doubt it was some form of hypnosis, but was it just making her sleepy? Or was it part of her 'discipline'? Would she wake up having a harder time controlling her bladder, or her bowels once she got control of them back? Would she be more obedient, or more childish?

She was sure all of those things were going to be true eventually anyway. It was almost easier to tell herself that this music was making her that way, and not herself giving in to keep from getting punished more, whether it was true or not. She didn't want to give in to it all, but if she couldn't get away, wouldn't that just make it easier?

She didn't want to think about that too much, and luckily, she didn't have to for long. Her eyelids gave up after just a few more moments, finally growing too tired and drifting downwards. She sank to the crib's mattress, curling up into a ball. She wasn't sure what to expect when she woke up the next day, but there wasn't much point fretting about it now. This was her new life for the next year, whether she liked it or not. That morning she'd been a grown-up, a witch getting ready to graduate in just a few months, out enjoying her spring break in the city with some friends. Now she was a magician's apprentice, fundamentally a Muggle and a baby, her only real job to follow around her Mommy onstage and look cute in her diapers, even if that meant using them in front of crowds of people. It was definitely humiliating, but she supposed there were worse things that could happen, though even as she thought that, she wondered if that was the hypnosis getting to her already and making her accept all of this. She squirmed, drifting off into sleep, barely noticing as her thumb made its way into her mouth.