Twilight woke up the next morning to a rather calm voice. A very calm, cuddly voice. Her ear flicked in the direction of the voice, her eyes still closed.

"Twily... Twily..." the voice said in a light singsong sound, "...wakey wakey... it's morning..."

Twilight's lips curled into a smile as she listened to the voice. The voice made her feel so warm, cuddly, and safe. Not only was it a sweet voice, but it sounded familiar. Very familiar, as if she had heard it while a filly. But, this voice didn't sound like Smarty Pants' voice, or a friend's voice, not even Celestia's voice. This voice sounded much more familiar, as if she knew the owner of this voice earlier than Celestia.

"That voice..." she mumbled to herself, "It... it sounds... so familiar... but... but who is it...?" But then, when she smiled at the voice, it spoke again.

"Ohp! I think I see a smile!" the voice cooed. Twilight then felt a hoof run through her mane very comfortably. "Is Twily awake yet?" Right then, Twilight knew exactly who it was, as there was only one pony in her life that woke her up so calmly and pleasantly.

She very slowly opened her eyes, and sure enough, she was correct. She saw a familiar pink pony standing over her, wearing a pink bathrobe, and a bit of white peeking out around her crotch, showing off her diaper. Twilight blinked a few times, rubbing her eyes as she looked up at the pink pony.

"C... C... Cadence...?" she mumbled. The pink pony smiled and very slowly laid next to Twilight, mimicking a mother deer laying with her fawn. Sure enough, it was her. To others, this pink pony was Princess Mi Amore Cadenza, Princess of the Crystal Empire. But to Twilight, it was Cadence, her old foalsitter and her sister-in-law.

"Good morning, Twily," she said, "Are you awake now?" Twilight moved over a little and buried herself in Cadence's furry side.

"Cadence..." she mumbled, "M... Mommy... chose you next...?"

"That she did," Cadence said, very slowly removing the blanket from Twilight so she wouldn't be tempted to fall asleep again.

"And... and you're not regressed...?" Twilight asked, her sleepiness slowly fading.

"Why would I be?" Cadence asked, "I don't need to be regressed to play with my Twily!" She booped Twilight's nose, which made Twilight giggle like a baby.

"So... you're OK with this...?" Twilight asked, sitting up and resting against Cadence, "Like... seeing me in a diaper...? This doesn't make you uncomfortable...?"

"Well, it's quite surprising," Cadence said, "But of course not. Why would I be uncomfortable to see my old Twily back?" Twilight smiled, but then she felt puffiness on the back of Cadence's robe.

"Are you wearing a diaper too, Caddie?" Twilight asked, using Cadence's nickname, that she only used when alone with her. Cadence giggled.

"I might be," she said, letting Twilight poke her diaper a second time. Twilight pieced it together.

"Oh my..." she mumbled, "Caddie... are you my playmate for today...?" Cadence giggled.

"That's right," Cadence said, "I took care of you for most of your life as the guardian, but for tonight, we're equals." Twilight was extremely happy inside.

"But... that means you have to act like a foal and wear diapers..." Twilight said, "And... you're OK with this?"

"Of course I'm OK with it, Twily," Cadence said, nuzzling her, "Besides, ever since I had Flurry, I've been in desperate need of relaxation and leisure. So, I figured a few hours of foal-play would be a nice way to recharge my batteries." Twilight smiled.

"It sure is!" Twilight said, "Acting like a foal is so relaxing, because you can be completely carefree and happy. I love it so much!" Cadence giggled.

"From the looks of things, I'd say so," Cadence said. Twilight blinked twice.

"But Caddie," she said, "That means Shining Armor is alone with Flurry, and he also has his responsibilities as well. Don't you think that's a bit too much to handle for him?"

"Yes, I realized that a few minutes after I accepted Auntie Celestia's offer," Cadence said, "But I promised him that after he finishes his Royal Guard duties tomorrow, I'll have a nice hot bath and a soothing massage for him." Cadence giggled. "And maybe something else, that I prefer not to mention openly." Twilight giggled as well.

"Don't worry, you don't need to," Twilight said, "Anyway, you said you're OK with foal-play, right?"

"Yes?" Cadence said.

"Well... um... how can you prove it...?" Twilight asked, "...I just want to be absolutely sure..."

What happened next was something Twilight wasn't expecting. Cadence smiled and raised herself from laying on her stomach to sitting. She then raised herself a little bit, arched her tail a bit, then sighed. A loud hissing noise was heard by Twilight, and she could see Cadence's white diaper very slowly become yellow. Her eyes went big as Cadence sighed in pleasure, the hissing noise fading and Cadence's tail went limp again.

"C-Caddie..." Twilight said, "Did... did you just...?" Cadence giggled.

"As I said, I'm OK with it," she said, sitting down again. The wet diaper pressed against her backside, and Twilight noticed that Cadence didn't make any cringing faces or signs of discomfort after sitting in her own urine. Twilight blushed, staring at Cadence's now-wet diaper. Never once in her life had Twilight even been in the bathroom at the same time Cadence was using the toilet, but now she had seen her wet a diaper. "Do you believe me now, Twily?"

"Yes, Caddie..." Twilight said, "I believe you..." Twily hugged her sister-in-law, then looked up.

"Um, where's Mommy?" Twilight asked, "She's usually here by now."

"Well actually, Auntie Celestia is going to spend the day alone to catch up on her responsibilities as a Princess," Cadence said, "So, it'll just be you and me for today." Twilight looked down.

"Oh..." she said. Cadence saw the disappointed look in Twilight's face and smiled.

"I know that'll be a bit unusual than what you're used to," Cadence said, "But I see this as our makeup for the last time we tried to spend time together."

"Oh?" Twilight asked, looking up at her.

"If you recall, our last time together was tarnished by Discord," Cadence said, "So, now we can make that up today, just you and I." Cadence kissed Twilight's cheek, making her blush.

"I... I never thought about it that way..." Twilight said, "That sounds wonderful..."

"Of course it does, Twily," Cadence said, "And we can do whatever you want today." Twilight smiled and hugged her again, Cadence hugging her back. After hugging for a few seconds, Cadence nuzzled Twilight.

"So, why don't we go get some breakfast?" she suggested. Twilight smiled.

"That sounds great," Twilight said, "But, are you going to change yourself first?" Caddie smiled and laid on her back, her wet diaper facing Twilight.

"Actually, would you like to change me, Twily?" she asked. Twilight blushed extremely hard.

"Oh... oh my..." Twilight said, "C-Caddie... are... are you sure...? You don't... need to embarrass yourself for me..."

"Who said this was embarrassing, hmm?" Cadence asked, "I'm just asking my sister-in-law if she'd like to change me, nothing more. Of course, it's a question, not an order, so you don't have to." Twilight blushed a bit harder and nodded.

"Sure," she said, "I'll change you." Cadence smiled.

"Well, go ahead," she said, "Take your time."

Twilight grabbed a spare diaper and supplies. After that, she changed Cadence's wet padding. Twilight's emotions fought each other inside her mind as she did. She was changing the mare who used to foal-sit her, which made her feel strange, but she also felt happy, flattered even. She never knew Cadence was willing to stoop to such a level to make her happy.

"I'm done," Twilight said. Cadence smiled and sat up, using her magic to discard her wet diaper.

"Thank you, Twily," she said, kissing her cheek. Twilight blushed again and giggled.

"That was... strangely enjoyable," she mumbled.

"Oh was it?" Cadence asked.

"Yes," Twilight said, "I'm a bit embarrassed to admit it... but it was." Cadence smiled.

"Well, I'm pretty sure that's not the only time I'll need a new diaper," Cadence said.

"R-really?" Twilight asked.

"Of course," Cadence said, "I'm not holding anything back, Twily. Auntie Celestia wanted you to have a babyish playmate, so that's what I'm going to be for you, no matter what." Twilight's weird feelings soon became flattery.

"You mean it, Caddie?" she asked.

"Of course I mean it, Twily," Cadence said, "My only veto is crying, on account that I can use my voice." Twilight giggled.

"Deal," Twilight said, "Plus, I'm pretty sure Flurry bombards you enough with the crying, so I wouldn't expect you to cry for something." Cadence and Twilight shared a laugh, then Twilight's stomach growled. Cadence smiled.

"I think it's about time we go get breakfast, wouldn't you say?" she asked. Twilight smiled and stood up, but before she could begin walking, Cadence's magic engulfed her and placed her on Cadence's back. Twilight jumped at the sudden magic pull, but blushed when she saw where she landed.

"I figured you'd like a ride downstairs," Cadence said, "After all, this was your favorite thing to do when you were little."

Twilight remained silent as she was too happy to speak. Cadence walked downstairs to the dining room, her wings extended to keep Twilight from falling. The gentle bouncing motion felt great as Twilight rode on her sister-in-law's back. It had been several years since she had rode on the back of another pony, and she had forgotten how it felt. But now, the feeling had returned, and she was loving it as a sigh of relief escaped her mouth. Cadence's ear flicked as she caught the sigh and giggled a little bit.

"Do you like that, Twily?" she asked.

"Yes... I really do..." Twilight said, "It feels wonderful... now I know why Spike loves this so much..." Cadence giggled again.

"Well, I knew you'd like it," Cadence said, "I know what's right for my sweet sister-in-law." Twilight blushed again.

"Caddie~" she whined, "How many more times are you gonna make me blush today?"

"As many times as I must," Cadence said, "You're just as sweet and precious as you were as a filly." Twilight giggled.

"Thanks, Caddie," she said, nuzzling the back of her neck.

A few seconds later, Cadence and Twilight had reached the dining room. Cadence let Twilight off of her back and sat in one of the chairs. Twilight was about to sit in a different chair, but instead, she decided to sit in Cadence's lap. Cadence smiled a little bit.

"Well, this is a bit unexpected," Cadence said.

"I... I kinda wanna sit with you," Twilight said, "If... if you don't mind, though. I could go sit somewhere else..."

"Of course I don't mind, Twily," she said, petting her mane, "Why would I be uncomfortable with my sister-in-law sitting with me?"

"I suppose it's impossible," she said. Cadence smiled as the cooks brought out their breakfast. Twilight's eyes went big as she saw what was brought out. It was cinnamon French toast, with sunny-side-up eggs, a bit of cut melon, and apple juice. Cadence smirked.

"Does this breakfast look familiar to you?" she asked.

"This... this is my favorite breakfast as a filly..." Twilight said, "My mom used to always make this for me..."

"That she did," Cadence said, "So, I spoke to the cooks, and they were happy to make it for you." Cadence grabbed a fork and knife with her magic and cut the toast up into small squares. Right then, Twilight realized she had forgotten something.

"Caddie wait," she said, "I can't eat without Smarty Pants. She could want some." Cadence smiled.

"Oh my," she said, "Well, give me a second." Cadence pointed her horn toward Celestia's bedchamber and used her magic to grab Smarty Pants and bring her downstairs. Twilight smiled and grabbed her best friend out of the air.

"Smarty Pants!" she said, kissing her cheek, "Sorry for leaving you up there."

"It's OK, Twily," Smarty Pants said, "You still remembered me." She looked up at Cadence and smiled wide. "Caddie!" She hugged Cadence. "I haven't seen you in a long time!"

"I haven't seen you in quite sometime either," Cadence said, "I'd never forget Twily's favorite toy when she was little." Smarty Pants giggled as Cadence finished cutting Twilight's breakfast, poured some syrup on her toast, and got some on her fork.

"Here comes the train, Twily!" she cooed, "Open up the tunnel!" Twilight smiled and opened her mouth as Cadence fed Twilight the bite of toast. "How is it?" Twilight smiled wide as she swallowed.

"It tastes amazing!" she said, "It tastes just as I remember it!" Cadence giggled and fed her a second bite.

"I knew you'd like it," she said. After a bit of silent eating, Twilight spoke again.

"So, how do you plan to spend our time together?" she asked, licking syrup from her face.

"Well, I was about to ask you the same thing," Cadence said.

"Oh?" Twilight asked.

"Of course," Cadence said, "After all, you're the younger baby here, so I think you should have a say in what we do today." Twilight received another bite of her breakfast and thought for a second.

"Hmm..." she mumbled, "I uh... I don't know.. Mommy usually suggests things to do while we do this..."

"Well," Cadence said, wiping Twilight's mouth, "Why don't you think of things we like to do together?"

"Like go to the Starswirl Museum?" Twilight asked.

"Ehh, think of our earlier years," she said.

"Go to the spa?" Twilight asked.

"A little earlier," Cadence said.

"Go to the park?" Twilight asked. Cadence smirked.

"Just a tiny bit later," she said. Twilight thought for a bit, then her eyes went huge.

"Are you suggesting 'that'...?" she asked.

"Suggesting what, hmm?" Cadence teased.

"You wanna go to the carnival?" Twilight asked.

"I don't know, do you?" Cadence asked. Twilight squealed in joy.

"Oh yes!" she excitedly squealed, "It's been a long time since I've gone there and to go with you again will only make it more fun!" Cadence giggled as she fed Twilight the last bite of her breakfast.

"Well then, we'll go to the carnival later tonight," Cadence said, "It's more fun when you go when its dark outside."

"I know!" Twilight squealed, "I haven't been there since Spike was a hatchling, so it'll be wonderful to go again." Cadence smiled.

"I'm glad you think so," she said, "But how about we play a game to burn some time?"

"Like what?" Twilight asked.

"Well, I would love a game of hide and seek," Cadence said, "How about you?"

"That sounds like fun!" Twilight said, "Can I hide first?"

"Oh course you can, Twily," Cadence said, "But, we need to get ready first."

In a matter of five minutes, Twilight and Cadence wrapped their horns in tinfoil and tied a rope around their torsos, which pinned their wings to their sides. This kept them from flying and using their magic to hide, which they felt was cheating.

"Alright," Cadence said, "You've got twenty seconds to hide, Twily!"

Twilight squealed and grabbed Smarty Pants, running off to hide as Cadence began counting to twenty. Twilight avoided hiding in the courtroom, as cases were still going on and she didn't want to bother Celestia. She also avoided hiding in any bathrooms, as that was too easy. Right after she heard Cadence get to fifteen, she quickly ran into the Royal Guard armor storage room and hid, uncomfortably laying on a bunch of helmets. She knew she had hid in much more uncomfortable places, so she didn't worry too much.

She remained quiet for a solid three minutes, listening to Cadence's hooves clop as she walked around the Castle, trying to find Twilight. Twilight couldn't see under the door, and the storage room had no light, so all she could do was listen.

Soon, the door opened, and in walked someone. Twilight held her breath and tried to remain as still as she could.

"Twily~~" Cadence called, "Come out, come out, wherever you are." Twilight pressed her hooves against her mouth, trying not to giggle and expose herself. Cadence walked around, trying to find Twilight, and Twilight curled into a ball, hoping Cadence wouldn't find her. But, Cadence walked closer to her, and Twilight was about to accept defeat, but surprisingly, Cadence walked out of the storage room and closed the door back. Twilight squealed to herself happily.

"She walked off!" Twilight said, "I think I just won!" Twilight stood up and decided to sneak out and find a new hiding spot. She quietly cracked the door open and peeked out. When she didn't see Cadence, she smiled and opened the door more to get out.

"BOO!" Cadence popped out of nowhere and spooked Twilight. Twilight squealed and jumped back, tripping over one of the helmets and falling onto her padded butt. Cadence laughed hard as Twilight tried to recover from her spook attack.

"Found ya!" she squealed. Twilight sighed and stood up, grabbing Smarty Pants.

"You scared me..." Twilight said.

"Yeah, I did," Cadence said, "I just wanted to surprise you. Sorry if I scared you too hard."

"It's fine, Cadence..." Twilight said, "But... uh... now I need a diaper change..." A foul smell reached Cadence's muzzle.

"Oh my," Cadence said, "It seems I frightened the mess out of you." Cadence took Twilight upstairs to change her diaper. One change later, Cadence disposed of Twilight's messy diaper and Twilight sat up, hugging Smarty Pants again.

"Thank you, Cadence," she said.

"You're welcome, Twily," Cadence said, "Alright, it's my turn to hide. Ready?" Twilight smiled.

"Yep!" she squealed.

Twilight covered her eyes and counted to twenty as Cadence quickly hid from her. But, instead of going downstairs, she instead hid behind Celestia's sofa, a few feet away from Twilight.

"Ready or not, here I come!" Twilight squealed, taking Smarty Pants with her as she walked downstairs to find Cadence, who giggled quietly to herself as she watched Twilight leave the room.

Twilight checked every room downstairs to try and find Cadence, but had no luck. She checked the kitchen, the dining room, the lobby, the foyer, and every single bathroom, but had no luck.

"Wow, Caddie is hiding good..." Twilight mumbled to herself.

"Need help finding her, Twily?" Smarty Pants asked.

"I don't know, Smarty Pants." Twilight said, "I've been searching for seven minutes. I've checked every single room down here, and she's nowhere to be found."

"Well, why don't you check Mommy's room?" Smarty Pants suggested.

"Smarty Pants, Caddie can't be in Mommy's room," Twilight said, "I counted in there, so it would be too easy."

"You could always try, Twily," Smarty Pants said, "Ponies always hide in weird places when playing hide and seek."

"I... I guess you're right, Smarty Pants," Twilight said, "Let's go check Mommy's room."

Twilight walked back upstairs to Celestia's bedchamber. Cadence held her breath after hearing Twilight come in as Twilight searched around the room.

"Where do you think she could be, Smarty Pants?" Twilight asked.

"Ummm... check the closet," Smarty Pants said. Twilight walked over to the closet and searched around Celestia's formal clothes, no luck finding Cadence.

"She's not here," Twilight said, Cadence shaking lightly as she kept herself from laughing.

"OK... um... how about the bathroom?" Smarty Pants suggested. Twilight shrugged and checked the bathroom. Cadence wasn't hiding in the shower, or the towel closet, or inside the medicine cabinet, or inside the toilet.

"She's not here either," Twilight said, "Do you really think Caddie's hiding up here?" Cadence's face turned red as she kept trying not to laugh.

"Of course she is," Smarty Pants said, "How about we check the balcony?"

"OK," Twilight said, "But if she's not out there, then I'm gonna go look somewhere else." Twilight went out to the balcony to look for Cadence. But, the only thing out on the balcony was Celestia's telescope and the beautiful sight of Canterlot.

"She's not here, Smarty Pants," Twilight said, walking back into the bedroom.

"Huh..." Smarty Pants said, "Maybe she's in Princess Luna's bedchamber?" Cadence strained to keep herself from laughing, but her straining only caused her to accidentally pass a loud blast of gas. She gasped as Twilight heard the sound of Cadence's "slip."

"Huh?" Twilight asked, looking toward the sofa, "Smarty Pants, did you hear that?"

"It sounded like a fart," Smarty Pants said, "Was that you?"

"No, but I think I know who it was!" Twilight squealed. She ran over to the couch and looked behind it, finally finding Cadence after ten minutes of searching.

"Found you, Caddie!" she squealed. Cadence giggled and stood up.

"Took you long enough, Twily!" she teased, booping her nose, which made Twilight giggle.

"You were hiding really good!" Twilight said, "I probably wouldn't have been able to find you if you hadn't have farted." Cadence giggled.

"Well, that was an accident," she said, "I tried to keep myself from laughing, and that happened."

"Oh, it's OK, Caddie," Twilight said, "Yours aren't that stinky. Nopony's are as stinky as Mommy's. Ask Smarty Pants."

"Eww!" Smarty Pants whined, "Don't remind me! It was hard to breath in it, and I don't even have lungs!" Cadence laughed.

"Oh, trust me, I know," Cadence said, "Auntie Celestia always ripped some pretty huge ones while we played outside or after she read me a bedtime story and thought I had fallen asleep. I sometimes had to use half a can of air-freshener to battle her clouds of death." Twilight laughed as well.

"But I did excuse myself, did I not?" a voice called. Cadence and Twilight both looked toward the door. Celestia had walked into the room, having just finished court, and having heard their whole conversation.

"Oh... sorry, Auntie Celestia," Cadence apologized, "We didn't know you were here."

"All's forgiven, Cadence," Celestia said, hugging her niece, "It was just a joke, and I'm able to take one." Twilight smiled and hugged Celestia's leg.

"Hi, Mommy," she said.

"Good afternoon, my sweet daughter," Celestia said, kissing the top of Twilight's head, "I'm guessing my next decision was a good one?"

"You bet!" Twilight said, "Caddie and I are having so much fun, and we've just gotten started!"

"Well, I'm glad to hear that," Celestia said, "Your happiness always brightens my day." Twilight blushed.

"Mommy~!" she whined, "Don't make me blush in front of Caddie!" Cadence giggled a little.

"I can't help it, honey," Celestia said, ruffling Twilight's mane with her hoof, "I just love you so much." Twilight smiled and nuzzled Celestia's leg.

"I love you too," she said. Celestia smiled and walked over to her carpet to finish some of her paperwork.

"Hey, Twily," Cadence said, "Let's continue our fun-time downstairs so we don't disturb Auntie Celestia." Twilight nodded and grabbed Smarty Pants again.

"Sounds good," she said. Cadence smiled and carried Twilight back downstairs.

~~~~~~~~~~

Once Luna's beautiful moon came out, Twilight and Cadence began getting ready to go to the carnival. Twilight got dressed into her favorite purple dress and brushed Smarty Pants' tail with her little toy brush as Cadence finished brushing her own mane.

"I'm so excited to go to the carnival with you!" Twilight said, "It's been such a long time!" Cadence giggled.

"Indeed it has," Cadence said, "I hope you enjoy your time."

"I will!" Twilight said, "How could I not?!" Cadence giggled again and put down her manebrush.

"Glad to hear you have such great spirit," Cadence said, "Alright, are you ready to go?"

"Mm-hmm!" Twilight said happily. Cadence smiled and looked at Smarty Pants.

"Smarty Pants, are you ready?" she asked.

"I sure am!" Smarty Pants said, hugging Cadence's leg.

"Well then, let's go," Cadence said.

Cadence performed a small squat and Twilight hopped onto her back, holding Smarty Pants in her hooves. Cadence then, after letting Celestia know they were about to leave, she took off and flew to the carnival. The second Twilight could see the insanely bright lights to the carnival, she squealed and began bouncing up and down eagerly. Cadence touched down at the line to the entrance as they waited in line for their tickets.

"I can't explain how excited I am!" Smarty Pants said.

"I know!" Twilight said, "And looking in from here, it's not very crowded tonight! Maybe lines won't be too long!" Cadence giggled and reached the ticket booth.

"Good afternoon, Princess Cadence," the ticketmaster said, "Princess Twilight. How may I help you?"

"Good afternoon to you as well," Cadence said, "Could we have fifty tickets please?"

"Oh, that won't be necessary," the ticketmaster said, "For royals, we simply give you these." He grabbed two pink, paper necklaces and placed them on the counter. "These will grant you unlimited rides for as long as you're here." Twilight's eyes went huge in surprise.

"Oh my," Cadence said, "Sir, I don't think I could accept this. We're here just for fun, not to conduct business."

"Oh, but I gravely insist, Princess Cadence," the ticketmaster said, "Besides, just to have you and Princess Twilight here is an honor of itself. I couldn't possibly charge you for tickets." Cadence thought for a bit, then smiled.

"Well, I humbly thank you, Sir," she said, taking the necklaces.

"You're very welcome, your highness," he said, "Enjoy your rides." Cadence smiled as a security pony let her go through the gate and into the carnival.

"Well, wasn't that mighty kind of him?" Twilight asked, "Now we don't have to worry about running out of tickets!" Cadence smiled and clipped her necklace around her neck, clipping her own afterwards.

"Yes," Cadence said, "Now, just to be fair, I think we should take turns going to rides. That way, everyone gets to ride what they want to."

"Everyone?" Smarty Pants asked, "Even me?" Cadence smiled.

"Yes, even you, Smarty Pants," she said.

"Then yeah!" Smarty Pants squealed, "Let's do that!" Cadence looked at Twilight for approval.

"I agree," Twilight said, "That's sounds fair enough to me."

"Yay!" Smarty Pants squealed happily.

"Well then," Cadence said, "Who would like to pick first?" Twilight smiled and looked at Smarty Pants.

"Smarty Pants," Twilight said, "Why don't you choose the first ride, hmm?" Smarty Pants squealed happily.

"Teacups!" she squealed, "I wanna ride the teacups!" Cadence smiled.

"Alright then," she said, "Let's go."

For the next two hours, Cadence, Twilight, and Smarty Pants all took turns riding the assorted rides at the carnival. First they started with the teacups, then Cadence chose the bumperships, and Twilight chose the Ferris wheel. After each of them chose two more rides, they all took a breath from rides and got some snacks. Cadence got some popcorn and Twilight and Smarty Pants shared some cotton candy.

"This is so fun!" Twilight said, "I've never had so much fun at the carnival before!" Cadence giggled.

"I'm glad you're enjoying yourself, Twily," she said. Smarty Pants took a huge bite of cotton candy from the stick.

"I love cotton candy so much!!" she squealed, licking her paws.

"Hey!" Twilight whined, "Save some for me, you little hog!" Cadence giggled and sighed.

"I think we should be getting back to the castle soon," Cadence said, "We've been here two hours, and I don't want to make you stay up too late." Twilight nodded.

"Yeah, sounds good," Twilight said, "But, how about one more ride?"

"Yeah!" Smarty Pants squealed.

"Alright then," Cadence said, "What ride would you like to finish off on?" Twilight and Smarty Pants looked at each other, then smirked.

"Leap of Faith!" they said simultaneously. They both pointed to a very large roller coaster a few meters away from them. Cadence looked at it.

"Oh my," she said, "That's quite a roller coaster. Are you sure you're not too afraid?"

"Heck no!" Twilight said, "I've been wanting to ride that roller coaster for years, but I've never been tall enough to ride it! I wanna ride it now!" Cadence smiled.

"Alright then," she said. Twilight smiled wide and grabbed Smarty Pants.

"Leap of Faith, here I come!"

Twilight grabbed Smarty Pants and flew as fast as she could over to the Leap of Faith, Cadence following behind her. They waited in line for about five minutes before being second in line. Twilight looked up at the massive roller coaster.

"Wow..." she said, "That's really tall..."

"Indeed it is," Cadence said, "Are you sure you still want to ride this?"

"Yes," Twilight said, "I've been waiting for years, and I may not get a chance like this with you ever again." Cadence smiled and nuzzled her.

"You've always been a brave filly," she said, "And I'm proud of you." Twilight blushed.

"Caddie, please don't make me blush now..." she said, "You're gonna mess up my scared face when they take photos..." Cadence giggled as they reached the front of the line. Twilight, Cadence, and Smarty Pants all sat in the very front car and strapped their safety belts, pulling the safety bar over their laps, which also pinned Smarty Pants to Twilight's lap so she couldn't fly off during the ride.

"We're in the front," Smarty Pants said, "That means we'll be able to see everything!" Twilight took a breath, petting Smarty Pants.

"Yeah..." she said, light fear kicking in. Cadence looked at Twilight.

"Is everything OK, Twily?" she asked.

"I'm OK, Caddie, I promise," Twilight said, "I'm just bracing myself." Cadence smiled and kissed Twilight's cheek.

"Kiss for good luck," she said. Twilight smiled and kissed Cadence back.

"One for you as well," she said. After sitting for a few seconds, the operator of the ride smiled.

"Everyone seems to be strapped in and safe," she said, "Ride will begin in three, two, one! May faith be on your side!"

She hit the button and slowly, the roller coaster began moving forward, and then up a huge incline. Twilight's fear, after Cadence's kiss of luck, had turned into eagerness as she bounced happily on the seat.

"This is happening! This is happening!" she squealed.

"I hope you don't wet yourself, Twily!" Smarty Pants teased.

"If I do, you can't blame me!" Twilight squealed. Cadence giggled as they reached the top of the incline.

"Caddie, let's count it down!" she squealed.

"Alright then!" Cadence squealed in excitement. They both took a deep breath and counted.

"Five! Four! Three! Two! One!!!"

Immediately, the roller coaster took off, going from 0mph to 70mph in less than five seconds. Twilight screamed loudly as the roller coaster rode over huge inclines and loops.

"ITTT'SSS SSSOO FAAAAAST!!!!" Cadence screamed.

"BUUTTT ITTT'SSS SOOOO FUUUNNN!" Twilight screamed in joy. Smarty Pants was unable to speak, as she was too consumed by excitement to speak. The ride ended after a full minute and came to a screeching halt at the entrance. The safety belts and safety bar automatically let up.

"Looks like you all survived!" the operator said, "Have a great night!"

Cadence, Twilight, and Smarty Pants all got off the ride and walked through the exit, all of them shivering from the excitement and their manes frazzled as all heck.

"Th-that... was AMAZING!!!" Twilight screamed, "That was definitely worth the long wait!!!"

"I'll say!!" Cadence squealed, "I've never rode on such a roller coaster, and I'm glad I just did!" Smarty Pants mumbled incoherently, clenching Twilight's leg hard. Twilight giggled.

"Looks like Smarty Pants couldn't take the speed!" she teased. Cadence giggled as well.

"Yes," she said, "But... you kinda lost it back there."

"Lost it?" Twilight asked, "Lost it how?" Cadence smirked and poked the back of Twilight's diaper. When she felt the familiar squish and smelt the familiar odor she knows very well. She blushed hard.

"I did that during the ride...?" she asked.

"You did," Cadence said, "A little bit after we hit the second loop as a matter of fact." Twilight giggled a little bit.

"I guess I can say that the Leap of Faith really scared the crap outta me!" she said. Cadence and Twilight shared a laugh, then sighed.

"Alright, Twily," Cadence said, "Let's get you back home and into a fresh diaper. It's almost midnight, and I don't wanna make you stay up too late." Twilight nodded and hopped on Cadence's back again.

"Sounds good," she said. Cadence smiled and took off, flying back to Canterlot. Once they got back to the Castle, Cadence laid Twilight on the changing table and changed her diaper.

"So, did you have fun, Twily?" Cadence asked.

"I sure did!" Twilight said, "You're more fun as a playmate than you are as a foalsitter!" Cadence smiled and powdered Twilight's bottom.

"I'm glad you think so," she said, "It definitely was fun to play with my little Twily again." She booped Twilight's nose, making her giggle like a foal.

"Oh, stop it, you!" she whined. Cadence smiled and taped up Twilight's new diaper, putting her onesie on her. Twilight sighed in comfort.

"It always feels great to get a new diaper," she said, "No matter what." She sniffed the air. "Wow, I really made quite a stinky, didn't I?" Cadence blushed and looked down.

"I... I don't think that's your mess you're smelling," she said.

"It's not?" Twilight asked, "Then what is it?" Cadence smirked.

"It's probably mine," she said. She turned her rear end toward Twilight, her diaper sagging and turning brown. Twilight blinked in surprise.

"Caddie... you pooped yourself...?" she asked, totally surprised. Cadence giggled.

"Well~ I did say earlier wasn't going to be the only time I'd need a new diaper," she said, "And those snacks from the carnival made me have to go." Twilight blushed.

"Well... I didn't say that was bad," Twilight said, "It just surprised me..." Cadence giggled as Twilight climbed off the table. "Do you want me to change you?" Cadence smiled and climbed into the table.

"If you don't mind, I'd love that," she said. Twilight smiled and changed Cadence's diaper, tossing both their messy diapers in the wastebasket. Cadence hopped off the changing table and stretched her hind leg.

"Thank you, Twily," she said, "I feel much better now." Twilight smiled and yawned.

"That's great... Caddie..." she said, fluttering her eyes. Cadence smiled again, looking down at her sleepy sister-in-law.

"I think it's time for you to get some sleep, Twily," she said. Twilight looked down and hugged Cadence's leg.

"Do I really have to...?" she asked, "I really had fun with you... and if I go to sleep... you won't be here when I wake up..." Cadence nuzzled Twilight.

"You're right," Cadence said, "I wish I could stay here with you forever, but I have responsibilities of a royal just like you do. On top of that, I'm sure Shining is wearing himself out right now, so I eventually have to go help him."

"Yeah yeah..." Twilight said, sighing in disappointment. Cadence smiled and hugged her sister-in-law.

"But, that doesn't mean we'll never get another time like this," she said, "Now that I know about your little secret, that means we can do this whenever you want next time."

"Really?" Twilight asked, "You'd do this again...?"

"Twily, I'd do anything you love to do," Cadence said, "I did everything you loved to do when I was foalsitting you, and I will still do it as your sister-in-law." Twilight smiled and hugged Cadence again.

"Thank you, Caddie," she said.

Cadence smiled and carried Twilight over to her crib, placing her inside and tucking her in. She then placed Smarty Pants in the crib with Twilight and tucked her in as well.

"Caddie..." Twilight said, speaking through her sleepiness, "...could you wait until I fall asleep... before you go...?" Cadence smiled and nodded, petting her mane.

"Of course," she said, "Goodnight, Twily."

"Goodnight... Caddie..." Twilight mumbled, her eyes slowly closing.

~~~~~~~~~~

After Twilight fell asleep, Cadence went back home to the Crystal Empire and went to sleep for as long as she could. At 7:00 A.M., she woke up once again and yawned, next to her sleeping hubby. She smiled and kissed his cheek affectionately.

"Thank you, honey..." she whispered into his ear. When a loud snore came from him in response, she giggled and sighed, rolling onto her back. That's when she caught the sight of a scroll, wrapped in a pink ribbon, sitting on her nightstand. Cadence grabbed it and opened it, reading it in her head.

"Dear Cadence," she read, "Thank you so much for agreeing to pretend to be a foal and playing along with Twilight. I don't think I've ever seen Twilight so happy with a playmate. You did quite a job, and I thank you for that. Now, I understand you asked for no reward, but I had to insist, and have rewarded you with something you could definitely use. Once again, I thank you, Cadence. Your aunt, Celestia." After reading, Cadence looked a bit confused.

"It's no problem, Auntie Celestia," she said, "But I'm confused... what reward do you mean...?" That's when Flurry began crying loudly a few feet away from her. She groaned and got out of bed, going over to Flurry's crib.

"Shh, it's OK sweetie," she said, "Mommy's here." That's when she felt that Flurry was crying because she had wet herself. Cadence smiled and changed Flurry's diaper.

"There we go," she said, giving her diaper a playful pat, "Who's my clean little filly?" She blew raspberries on Flurry's tummy, making her squeal happily and squirm. After a few seconds, she grabbed Flurry and sat on her bed with her, rocking her back and forth.

"Mommy loves you, Flurry," she said. Flurry smiled and grabbed her mother's hoof, sighing as she hugged it. Right then, to Cadence's complete surprise, she heard Flurry say something.

"M... Mo... mmy..." Flurry softly said. Cadence's ear flicked in surprise as her eyes went wide.

"...Flurry... did you... just say 'Mommy...?'" she asked.

"Mom-my..." Flurry repeated, nuzzling into her coat. Cadence's look of disbelief turned into a look of joy.

"Oh my goodness! Flurry! You just said your first word!" she squealed, "My daughter just said 'Mommy!'" Shining yawned and slowly woke up.

"Hon... is something wrong...?" he asked her.

"Flurry just said 'Mommy!'" she squealed. Shining immediately sat up.

"What?!" he said.

"Yes! I mean it!" Cadence squealed, "Flurry, can you say it again? Say 'Mommy.'"

"Mom-my..." Flurry said again. Shining gasped.

"My goodness! That's her first word!" Shining squealed.

"I know!" Cadence squealed, "Shiny, go get the camcorder! We need to save this moment!" Shining nodded and jumped out of bed.

"I gotta tell Mom and Dad and everyone!" Shining said, running downstairs to the lobby to get the camcorder, wobbling as his hind legs were asleep, "This is amazing!" Cadence giggled as she watched him leave, then kissed Flurry's cheek. She then smiled and looked out the window.

"I suppose you're responsible for this, Auntie Celestia," Cadence said, "Well, thank you very much. Anytime you want me to do that again, you can count on me."

Author's Note

OK! So let me address the elephant in the room.

Yes, I understand the waits for these chapters are extremely long, and I'm sorry for that. But, I'm 18 now, so that means I have much more responsibilities in my life now. I'm going through my final year of high school, I've got a job, and the time I have to write gets lower and lower. I'm sorry for the very long waits, and I hope I still have some readers for this story.

Anyway, Princess Cadence's chapter has come and gone. And now, voting is back up. Here are the remaining characters:

Vinyl Scratch*
Octavia*
Shining Armor
Minuette
Big Macintosh
Princess Luna
(*Separately first, then together after I start combining characters)

And now, here's what I'd like. Go ahead and vote for who you want next, AND vote for who should replace Cadence in the poll. Also, after you vote, tell me if you want him/her regressed or not. Think of this as my way of making it up to you for the long waits.

Start voting now! Winner will be selected in two weeks.

(Also, yes, I had Cadence be Celestia's niece. See, if Blueblood is Celestia's nephew, then he has to be Luna's child. And I've seen people make Blueblood Cadence's brother on multiple occasions. So, that's why I believe Cadence is Celestia's niece and Luna's child.)

[And as for Cadence's reward, if you're wondering how Celestia did that, I figured Celestia could've enhanced Flurry's thinking power a little to have her comprehend how to pronounce "Mommy." I had trouble finding out a gift for Cadence, because it's hard to give a gift to someone who probably already has everything, like a royal.]