Flitter Outgrows Her Sister

by SizeShifter

Rating: mature
Tags: My Little Pony: Friendship is Magic, Flitter and Cloudchaser, Fetish, Slice of Life, Sex, Human
Length: 11608

Flitter is jealous of her taller, hotter, stronger sister. She finds a way to rectify this.

Cloudchaser has always been taller, bulkier, and generally more attractive than her sister which frustrates Flitter to no end. After one humiliation too far she obtains a magic item which will allow her to grow and not just equalize things, but allow her to greatly surpass her sister like she had only dreamed of.
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This story contains slow paced growth, lots of poorly fitting clothes, and a focus on muscle along with size and strength comparisons. The sex tag is for much later in the story when their relationship will become less than sisterly.

Cover art and story concept by Cosmonaut
Proofread by TehDemin

Published 2020-11-01 17:20:00 UTC
Last updated 2020-11-01 17:20:00 UTC

Chapter 1

Flitter puffed as she jogged around the track. She wasn’t keeping close attention on how fast she was going as she was more concerned with general endurance and keeping her blood pumping. Not that any of it really mattered. What was more important was that she was outside where her sister wouldn’t see her. She was too busy with the inside area of the gym where she would be lifting weights rather than chiding her for only doing four laps so far in the time she’d been out here.

Then she heard the pounding of shoes to her side soon followed by Cloudchaser’s face looking down at her. “Hey, you! What are you still doing out here? You told me you’d work out with me today.”

“Only because you practically dragged me here. And I am working out. I’m on my seventh lap.”

“Ooh, only seven?” Cloudchaser grimaced, “I’ve really gotta get you out here more.”

She then leaned over and wrapped her arms around Flitter’s narrow waist as she kept pace with her. Cloudchaser had always been the bigger of the two growing up considering that she was born nine months ahead of her sister though even now as adults the gap never closed so she had no difficulty leaning in to Flitter’s 5’2 body compared to her standing at 5’10. Pressing against her back Flitter could feel Cloudchaser’s breasts against her which were also at a size that she could not compete with.

“C’mooon,” she begged, “you said you’d work out so that’s what you’re gonna do. I need someone to spot me anyway.”

Flitter wanted to just keep up her jog and ignore her sister, but Cloudchaser gradually steered her towards the doors back into the gym. Cloudchaser wasn’t exactly beefy, but she had ample lean muscle which was too much for Flitter to fight back against while her protests were being ignored. Begrudgingly, she stopped resisting.

“Fine. But at least find a spot where I can look at some of the boys working out.”

“Why do you need that when there’s plenty of me to enjoy? Isn’t that the fun of spotting your big sis?”

Flitter lightly elbowed her in the stomach to which Cloudchaser just giggled, but she did release her. “Don’t know why you’re in such a bad mood. I thought this would be fun for us!”

“Yeah, but I don’t need you being weird like this.”

“Whaaat? Who’s being weird? I know you like girls too so I thought you’d be happy with a view as good as I provide? Or are you past the phase of asking me for ‘kissing practice’?”

Flitter flushed, “I’m not a weird little teen anymore!”

“Really? You still look it.” Flitter went to swat at Cloudchaser but she nimbly jumped back out of the way then ran ahead. “Race you to the weight racks!”

Flitter normally wouldn’t want to humour her like this, but ran after her anyway. Sure, she may have had thoughts about her sister and they may have done things together some time ago, but it was different now. She was beyond that. At least, that’s what she told herself as her eyes kept locked with Cloudchaser’s firm butt as she ran ahead.

Cloudchaser stopped at a weight bench and waited for Flitter to catch up. “Wow, all that cardio really hasn’t done much for ya, huh?” She crouched down. “I guess we’ll do the leg press after for those noodley things, huh?”

Flitter ignored her poking at her soft legs. “Just rack some darn weights.”

“Sure, mind helping me with the other side while I do this? Just put that 50 pound weight on there. Don’t grab two 25s or it’ll be unbalanced.”

Flitter knew full well what her sister was trying to do here. This was the same sort of thing that tended to happen every time she dragged her to something like this. Even back in school for sports days they’d team up, but she knew Cloudchaser enjoyed being the one to win the events for them and have someone inferior to compare herself to.

Flitter wasn’t going to tell her to do it though. If she wanted the weight on there she’d get it up there. Her frustration would be the fuel to push her to lift it. It had to!

She grabbed the weight at its sides and lifted. And lifted. And strained. And thought she felt something pop in her back.

Cloudchaser snickered as she leaned over and took it from her. “Flitter, honey, your form is absolutely brutal. Putting all the weight on your spine like that is gonna kill ya. I’ll get it this time.”

With a metal clunk the weight was put on the bar and Cloudchaser got into position lying down under it. Flitter was familiar with this part at least and stepped over by her sister’s head with her hands under the bar to catch it if it slipped. Not that she thought she could do much if anything happened.

Cloudchaser unhooked the bar and began to slowly pump it up and down. Flitter gazed around the gym since her sister was now too focused to tease her any more. She looked at the other people pumping weights and quite enjoyed the sight, but her eyes kept falling back on Cloudchaser. She took in the rise and fall of her healthy bustline, the way her face looked so pretty even when tensed up, the sweat that began to trickle down her bicep-

There was a clang as the bar was racked again.

“Phew, okay, show’s over. Your turn.”

Flitter shook her head. She must have been staring longer than she thought. Then she realized what was just asked of her. “W-what? Me? I can’t lift all that.”

“I know you can’t,” she stated, “that’s why we’ll take off those big ol’ weights for you. We’ll start you with the bar and see if you can manage that.”

Cloudchaser unracked the weights and Flitter laid down on the bench. “So how much am I supposed to do?”

“Just do one set of ten reps for now. Pump it a mere ten times and then you can take a break. If you can manage that.”

Flitter gritted her teeth and lifted the bar. After lowering it just once her arms were already starting to burn, but she managed to push it up again, then down, then-

“C’mon, you’ve gotta lower it to your chest. I know it’s lower than mine, but you’ve gotta do it.”

Flitter tried to shoot a glare at her sister, but her bust was the way. Her eyes lingered for a second before focusing back on her task. She forced herself to lower and raise the bar, puffing as she counted each repetition, but when she raised it for seven she had to rack it and let her arms fall limp. She sat up with a tired, exasperated sigh.

“That’s all? You didn’t even finish the set.”

“I’m just not built like you, okay?” Flitter snapped back.

“Yeah, you’re definitely kinda tiny but I thought you could do at least that,” Cloudchaser said with a poorly stifled laugh, “Guess I can’t count on you to help me out with my training for the final physical test then.”

“What?”

“Oh, I must have totally forgot to mention! I passed all the Wonderbolts tests! There’s one more big test a month from now to determine if you get in. Darn, I was counting on you and your little noodle arms to help me out.”

Flitter stood up and sputtered indignantly. “You didn’t tell me you were doing those! If I’d known I’d have trained with you. We could have done them together!”

“Pfft, uh huh,” said Cloudchaser as she went to put the weights back on for herself.

“What’s ‘uh huh’!?”

“I mean c’mon, Flitter. I know you’re mad that you got beaten by a bar, but be real. You’d have washed out in the preliminaries. There were skilled athletes who failed even then. Like, can you even name a single sports award you’ve won?”

Flitter opened her mouth but paused. She had won plenty of awards! That is, awards that had also been won jointly with her sister. Any sporting competition in her life in school, in town, at events, any time she’d meaningfully placed it had been when her sister was there to drag her along.

She had enough. Flitter turned and stormed off.

“Really, Flitter? You don’t have to be mad about it! We can do freeweights! ...Whatever.” Cloudchaser sighed. That was the difference between them. When Flitter failed or got mad she’d just give up. Not her though. Maybe things would change if her sister could just learn to instead find a way to face and overcome her challenges. The best revenge wasn’t to get mad. It was to get even.

Chapter 2

Flitter sulked in the park. Stupid Cloudchaser. Bringing her to the gym just to make her feel better about herself and to poke fun at her. Her arms were not noodley! They were normal size! She at least prided herself on being the cuter, more girly one of the two, but that didn’t seem to matter much now. Even then it was hard to compete with someone with such a strong, tall, athletic body.

The Wonderbolts thing was the biggest stab from Cloudchaser though. They’d always talked about joining them some day. Not like it was a promise or a big plan, but it had been a bit of a dream of theirs. Even if she would have washed out the fact that her sister was so dismissive of her feelings to the point of not even bothering to mention it to her stung. But if the last test was still a couple months away maybe if she trained really, really hard she could crash it? Just to show her sister!

That was a foolish hope though. She couldn’t even lift a damn bar! And at 5’2 she wasn’t exactly built for running. The strength difference would take possibly years to equalize and there wasn’t anything she could do about the size difference.

She got up and gloomily walked over to a nearby food cart. Maybe something to eat would make her feel slightly better. She dropped five bits on the cart’s counter.

“I’ll have a hotdog or something. Whatever this much gets me.” she said, staring downward.

“Um, ma’am. This isn’t a hotdog cart.”

Flitter looked up, shocked. No, this was very much not a food cart. Within it were all sorts of strange objects and knick-knackery surrounding a young woman with gaudy earrings that jangled as she leaned forward.

She smiled down at Flitter, “I do have some kale chips stashed in here that I could share if you wish. Though I doubt that food is the solution to your troubles.”

“I-I’m so sorry, I didn’t think. I mean, I didn’t look. I mean, ugh, I’m just having a bad day. Sorry.”

“No no, please, do share. My little shop here is all about solving problems.”

“Are you like a therapist?”

The woman laughed, “Oh goodness no! No, I travel about with all sorts of arcanery with countless different effects!” she said as she gestured grandly to the collection of items behind her, “You tell me what ails you and I can probably find something to help with that. Let me guess, you’re here because of your chest?”

“What? No, my chest is fine!”

“Ah,” the woman cringed, “my apologies, that’s what most girls come to me for.”

“No, it’s just,” she sighed, “basically, I’m sick of my sister being so much better than me. Taller, stronger, hotter. She’s really gotten on my nerves lately.”

“So it is a size issue then. I have many ways to fix this. But I must ask, what is it you want? To get even with her? Or let her know what it’s like to be in your shoes?”

Flitter cocked her head to the side, “You mean...?”

“It depends what you want. You could enjoy being her equal, her superior, or-” she leaned down closer to whisper the last words, “-you could utterly dominate her.”

Flitter couldn’t ignore the tingle she felt hearing that. “I-I like the last one.”

“Excellent!” The woman clapped her hands together then crouched down to rummage about. Soon she returned and held out a small, flat box. Opening it she revealed a circular piece of fabric. Flitter picked it up to inspect it. It was white with a red stripe in the middle and felt elastic.

“So what is this?”

“It’s a magical sweatband. For your head.”

“It kinda smells.”

“It’s hand wash only. Magical items tend to be like that. Anyway, for it to work you simply have to wear it. Keeping it on whenever you sleep will promote growth in all the places you want and wearing it whenever you exercise will do wonders for muscle gains. It will make you taller, more more buff, and should maintain and promote weight gain in aesthetically pleasing locations. Ah, I see the look on your face! My comment about your chest wasn’t so far off then, was it?”

Flitter could only smile. “Thank you. Thank you so much. How much do I owe you?”

“Nothing at all, please. It’s my treat.”

“Thank you! I won’t forget this!” said Flitter as she ran off with her prize.

“No, wait! I was merely being polite! Oh, not again. My wife is going to kill me.”

Chapter 3

“Changed your mind then?” said Cloudchaser as she looked down at her sister.

Flitter was tying up her shoes and found it odd how much she enjoyed the feeling of her toes pressing against the ends of them. It had just been a day since she had received the sweatband and the change was apparent after only one night of wearing the it. Nothing extreme had happened, but she could feel the change in her longer limbs, the new definition she could see in her body, and even her sports bra felt uncomfortable. It wasn’t much, but 5’4 was a nice height to be at.

“You’re not still mad about yesterday?” Cloudchaser asked when Flitter didn’t respond.

Flitter stood up with a big smile. “Nope! I’m much better now!”

She adjusted her top to show off a little bit more cleavage, hoping her sister would take notice, but Cloudchaser had already gone back to being concerned about herself as she stretched.

“Well that’s good” Cloudchaser said, “I mean, it’s not like it’s a big deal or anything. We just have different body types. I can’t help but poke a little fun once in a while.”

Flitter just grinned though the comment. Wow, not apologizing, but instead justifying her words in the gym. She was going to enjoy the coming weeks.

“I get it. We’re different. I’d do the same if I was in your shoes.”

That made Cloudchaser laugh. “Oh yeah, sure.”

“What? Do you think I’m too nice?”

“Well, that too. By the way, your new headband makes you look like a dork.”

“Really? Because I think it makes me sexy.”

“Oh yeah, that’ll solve your love life problems. The combo between it and your pink bow really makes you look hot,” chortled Cloudchaser.

“Can we just get to running? My muscles are aching for a workout.”

“Uh huh. You’re probably still sore from that little bit you did yesterday. And you don’t have to keep up with me as we do this. I’d rather not have to carry you home.”

Flitter found her teasing much easier to ignore now that she knew these little jabs had such a limited lifespan. She was distracted anyway by the dull ache through her body that felt like it had to be worked out and she knew that this would be the only way to fix that. There was an energy and excitement within her that may have been the magic, but could have just been the idea that she might actually match her sister.

“New shoes?”

“Hmm?”

“Just seem kinda tall is all. Whatever, you good?”

“Yep, I’m good to go.”

And so they began to jog onward. It felt different than normal though. Flitter found that there was an extra sprig in her step she hadn’t felt before. Even as the minutes racked up she felt that she was enjoying the exertion and didn’t get the same pain in her side that she was used to. Several minutes in she’d have slowed down or made some excuse to take a break, but she felt no need or even desire to stop. Why slow down when this was so much fun?

Cloudchaser must have taken notice of her much improved performance and began to pull ahead, picking up her pace slightly. Flitter wasn’t eager to be left behind as always and sped up herself even going as far as to move a little faster than needed and enjoyed the rare opportunity to be ahead of her sister. Cloudchaser did not enjoy this little game and increased her speed again with this process continuing until they ended their circuit around the town panting from the full out run they had worked each other up to.

“Sweet Celestia,” Cloudchaser huffed, “what did you have for breakfast today?”

“The usual,” said Flitter who looked equally as tired, “I hope you’re not full for lunch because you must have gotten your fill eating my dust.”

Cloudnchaser didn’t laugh and instead turned away to stretch as a means to hide her scowl. She wasn’t used to this happening to her, let alone from her sister. She concluded that she must have pushed herself too hard recently and it was doing more bad than good if she’d worn herself out enough to have Flitter of all people keep pace with her like that.

With Cloudchaser looking away Flitter let herself cringe as her muscles burned. Perhaps her hopes were a bit too high after a mere 24 hours. Even magic has its limits and she pushed herself too hard to keep up with her sister so now she paid the price. However, even with the pain she was experiencing it didn’t exactly feel bad. Instead it was a good sort of burn, one that she knew would pay itself back well. Maybe after a few more days it wouldn’t strain her to perform at this level. Maybe after a week this speed would be a warm up for her. And after that?

She could only look at the current figure of her tired, sweating sister and smile.

Chapter 4

“You really don’t have to come you know,” said Cloudchaser as she fixed her hair in the mirror.

“Nah, it’ll be fun!” replied Flitter as finished off her makeup.

“No, I mean you actually really don’t. A plus one isn’t required.”

“So you’ve told me. But you know I can’t pass up the opportunity to meet some of your friends. If you really didn’t want me to go with you then why’d you bring it up?”

“It seemed like a good idea, but the more I think about it the more I just feel like it’ll be super awkward. It’s all going to be athlete talk and you’ll look and feel out of place. Why don’t you just sit at home with a book or something?”

“I’ve already got myself all dressed up so if you really felt that strongly you should have told me. Too late now.”

“Yeah. Too bad your dress looks like it does.”

Flitter put down her mascara. “What’s wrong with this? This is my usual ‘fancy going out to a nice place’ dress.”

Cloudchaser stopped fiddling with her hairspray and turned to her sister. “Is it? Well I don’t know what you’ve done with it because it looks pretty bad.”

Flitter played innocent, but she knew that Cloudchaser saw what she had realized herself when she took it out of the closet earlier. It had only been a couple days since their little jog turned footrace but the changes continued to progress well. Perhaps not enough for her arrogant sister to take immediate notice, especially now that she was wearing heels, but her clothes had begun to protest her increase to 5’8.

Her dress was a light blue colour and was supposed to cling to her curves but now it did much more than cling as her body had lengthened and broadened. She kept finding herself pulling it down as her increased height and larger, firmer butt didn’t fit as well as it should under the already short hem. As much as she appreciated it showing more of her growing body it did give a poor impression of her taste in clothing as it bordered closer to slutty club wear than elegant formal wear.

The one part that did look much better though was her stomach region. The dress was designed to flow around that area to leave it open and reveal a small amount of her smooth torso. With her changes the effect was only improved. The increased height stretched the fabric to show more of her abdominal area and with her muscle increase it no longer looked soft, but instead had definition that you could see in the light. She could only imagine how her little abs would look in time.

“Really? I like it.”

“Of course you do. I’ll give you style tips another time, I guess.”

Flitter looked at Cloudchaser and as happy as she was with herself she couldn’t deny that her sister looked really good. She wore a classy red dress that had a low back and a high front allowing you to see her well defined legs and up top it framed her arms allowing for a good view of her biceps and strong back muscles. She looked even more impressive in six inch heels making her seem to be a towering six foot four and- oh dear she was staring at her again. Focus on yourself, girl.

“Nice trick with the abs though. Where’d you read that?”

“Hmm?”

Cloudchaser prodded Flitter’s stomach. “Those. You know, working out a bit beforehand to make your muscles more defined. Nice work. I don’t bother, but I guess it’s a good idea for someone like you.”

“Wow, ‘Chaser. I’m impressed. You’ve managed to insult everything except my face and feet so far!” She said it sarcastically, but she’d been a little surprised by her sister’s attitude toward her recently. There had always been a sibling rivalry that came up as teasing once in a while, but the past few days Cloudchaser been quite regular with the attitude she was giving her. Flitter could only assume that even if her sister had yet to really acknowledge the changes happening part of her must have noticed and been bothered. Or she was still very annoyed by being nearly beaten by her a couple days ago. She could see that remaining a sore spot for her.

“Oh well your make up is fine, don’t worry. You’ve always had a knack for it I haven’t. Really, how do you get that swoosh by your eyes so smooth?”

“It just requires some practice. Do you want me to do it on you?”

“Nah, I’m good. I’ll let you keep the cooler looking eyes. Might keep them from looking at your feet.”

While Cloudchaser had sexy scarlet pumps Flitter was wearing sandals. They were nice sandals, but they were still not entirely what one would expect with this sort of outfit. It’s not that Flitter had planned to wear something like this since she certainly had more than enough pairs to choose from. It was her sister who was the type to have just one nice pair and one workout pair. Flitter took pride in accessorizing, but earlier that evening she had found that the one downside to her increased size was her small shoe collection becoming obsolete.

She had tried several pairs that would work with what she had planned, but each were far too tight for her feet. Too narrow for her broader feet, her toes stuck out the front, and her heel slipped off at the back. In a fit of frustration she had even forced herself to try wearing a pair only for the thin, elegant straps to loudly crack apart after a few steps in them. It was upsetting to have something she enjoyed ruined like that, but at the same time she got a thrill she’d never felt before watching something that used to fit her so well be destroyed by her sheer size. She’d have explored it more if there was time, but had to instead hurry and settle for an old pair of sandals that had been oversized, but even now she could feel her toes on the edge and the straps digging into her feet.

“The heel broke on the pair I wanted and this was the only other one in the right colour.”

“Whatever, your choice. You need the bit of extra height when you can get it, but I’m not gonna tell you what to do.”

Flitter hid the smug smile she felt coming on. Cloudchaser was right since she certainly would get the extra height when she could. She was glad her sister agreed.

*****

Their walk together through town to the central building was done largely in silence. They had sniped at each other enough when getting ready that neither particularly felt like talking by the time they were out the door. After the short walk and cool evening breeze they felt a little better though, and seeing the banner that hung up outside the town hall made Cloudchaser giddy.

The building had been taken over by the Wonderbolts for the evening as they did a circuit around various major cities and towns. The point was to draw attention to their recruiting season, celebrate those that had made it to the final round and, more importantly, sell tickets to the big event. The Wonderbolts were such an important team that many were interested in seeing who would make it through the final trials and it certainly helped that it was made into a partial showcase of the current team’s abilities as well.

“Are you excited? Please, don’t be nervous, because I’m not nervous, but, Flitter, I swear, please just don’t embarrass me in front of them. I can’t afford to mess it up. Them liking me is part of the competition so please don’t be weird.”

“You’re the one practically vibrating so just chill.”

“It’s just important okay!?”

They stepped inside and found the large open room ringed by various buffet tables with well dressed people mingling with each other. Most Flitter recognized from town, but she was sure that others must have come from nearby for a chance just to shake hands with such famous athletes. Cloudchaser left her briefly only to come back with a bolt shaped pin for on her dress which she took to mean that the finalists were marked somehow. She had tried to tell herself that it was unimportant, but seeing that on her sister just burned her up. She made an effort to distract herself instead and fiddled with the contents of her purse to act uninterested in Cloudchaser.

She then scanned the room to see if anyone else made it in, but the only one she could notice was Thunderlane. Really? Him? She thought he was a bit of a doofus, but good on him. What was most noticeable to her though was the one person who was very conspicuously missing.

“Did Dash seriously not make it through?”

Cloudchaser shook her head. “She was easily my toughest competition too. But you know how she is; made it to the third round then slept in and missed it. She’s probably at home still sulking.”

Flitter was about to say something more when Cloudchaser leaned down to her and started nervously nattering in her ear. “Okay shut up it’s them so don’t say anything, okay? Don’t screw this up for me.”

Approaching them were two people that Flitter could immediately recognize. One with bright orange hair that stuck up seemingly without the aid of hair gel and the other with wavy navy coloured hair that was almost certainly not combed since he got out of bed that morning and yet somehow still made him look handsome and stylish.

“Oh well hello there! It’s so nice to see you. Love the dress, Spitfire. Very good taste!” said Cloudchaser with a laugh that creaked just a little.

Spitfire smirked as she looked between their two dresses. By sheer chance the two were wearing one of the same colour and style.

“I take it that we both shop at the same place in Canterlot, eh? Sorry Rookie, but you’re gonna have to change.”

Cloudchaser hesitated to react until Spitfire laughed at her joke and only then did she follow suit. Flitter wanted to roll her eyes, but instead continued to smile politely at her sister’s side. Even if she had lost out physically she was much more adept socially and almost felt bad for Cloudchaser’s lack of innate ability when it came to this sort of thing. She’d cut her some slack.

It also helped that she felt like she had to impress these two. She felt her heart beat a little faster looking at them. Just Spitfire’s legs alone were more than enough to get her attention with their defined muscle along their significant length making her just want to hug them and not let go. At 6’2 and looking looking like 6’5 in her heels she enjoyed looking up at the gorgeous woman.

Spitfire nudged her companion. “Finish your mouthful of pie and stop being rude, Soarin.”

He gave an earnest attempt to respond, but only succeeded at mumbling incoherently through his full mouth. Not that Flitter really minded since she was happy enough to just look at him. At 6’6 and covered in dense muscle it looked like his suit was close to bursting. What seemed even closer to tearing though was the bulge in his pants. She could only imagine what he was packing under there, but tried to save those thoughts for another time as she looked expectantly at her sister to say something. Looking at her eyes, however, it seemed that she had failed to file away those same dirty thoughts.

Fine then. If her sister wasn’t going to be polite then she would.

“Hi there, I’m Flitter. I’m Cloudchaser’s-”

“-she’s just my little sister!” she said with a forced laugh, “Just figured I’d bring her along, you know, see what it’s like to hang around with so many talented athletes like us!”

Cloudchaser would never just say ‘younger’ sister, would she? Always ‘little’ sister. There was even a bit of extra emphasis and bite in that one. Alright, fine, so much for being nice for the evening.

Flitter tried to think of a good way to strike back at her sister, but Soarin, having swallowed his pie, unwittingly did better it better than she ever could. “I dunno, looking at her I’d say it runs the family, huh? I bet you have some competition, eh?” he said with a friendly humour in his voice.

The effect was immediate with Cloudchaser’s smile faltering for a moment then tightening. “Oh nooo, I wouldn’t worry about that. She’s an alright amateur, but it’s not quite the same.”

“Oh I’m not so sure, ‘Chaser,” said Flitter, “I thought that race was pretty close the other day.”

Cloudchaser turned to her with a ‘why in the fuck would you bring that up right now of all times’ stare. The other two, for their part, seemed to enjoy the rivalry.

“Ooh, is she giving you trouble on the track there, Rookie?” said Spitfire, “Maybe you oughta get her to sign up next year.”

Cloudchaser laughed uneasily. “I-it was just a little jog thing. It wasn’t a big deal. I haven’t lost to her in years.”

“...Seven years...” Flitter muttered loud enough for them all to hear.

“What was that?” said Cloudchaser, leaning towards Flitter and narrowing her eyes.

“It’s been seven years since I totally beat you.”

“You didn’t beat me.”

“But I actually did.”

“Arm wrestling isn’t a sport, so it doesn’t count.”

Flitter cocked an eyebrow and gave a smirking sidelong look to Spitfire and Soarin. “Can the experts weigh in?”

The both nodded in agreement.

“Mmhmm, shport,” said Soarin through more pie.

“It’s true. We even keep track of wins through academy records.” said Spitfire.

“I had the flu! That has to invalidate it.”

“You were also thirteen and I was twelve which you seemed to think was fair until you lost.” said Flitter.

“Fine! You think you’re so great let’s do one right now! You can put that in your records then.”

“Ooh, I love your spirit, Rookie! Lemme clear a table for ya.” Spitfire and Soarin went off together to find a table for them to compete on.

Flitter froze. She really enjoyed getting Cloudchaser all fired up over nothing like this, but she hadn’t considered actually competing with her here. She was much improved from what she was just a few short days ago, but looking at Cloudchaser’s arms she knew she still wasn’t quite a match. It wouldn’t be humiliating, but it would be a loss. Unless...

She arched her foot up against the top of her sandal until she heard the small metal ping sound of her strap snapping undone.

“Oh, shoot. Give me a sec,” she said as walked off to the side and crouched down to fix her shoe. Cloudchaser ignored her as she did so, still too unreasonably upset to do much more that stretch her arms while the other two moved a table in from the perimeter of the room.

With no one paying attention to her she opened her purse and fished out what she needed. The headband. It would look so stupid and obvious to wear on her head, but she hoped that looking like an idiot with it on your forehead wasn’t a requirement for it to work. She twisted the band around to make it a smaller loop then lifted her foot and slid it up her leg until it rested high on her thigh like a garter. She had a moment to ensure that it was hidden by her dress when a wave of energy hit her. Oh yes, this was working just fine.

She stood up resolutely with a new vigour she hadn’t had before. She walked over to the table that had been cleared and looked at Cloudchaser with a confidence that her sister was not used to seeing. That didn’t deter her though, and she faced Flitter with her own look of determination. She put her arm on the table and Flitter grasped it.

Spitfire reached out and held their clasped hands to keep them steady in the middle. Cloudchaser certainly looked like she had the advantage just from the difference in bicep size, but it was close enough that it didn’t seem like a sure thing.

“You two ready? Okay. 3... 2... 1... Go!”

As soon as she took her hand off the two began to go at it. Their muscles flexed as they both put all they could into bringing the other’s hand to the table. They grunted and their faces tightened in exertion. If Cloudchaser was surprised by how well Flitter was holding out she certainly didn’t show it. Her mind was too focused on winning.

Still, as much as Flitter tried, her arm began to be pushed back. She still had that familiar warm feeling throughout her body and her muscles burned in that way that felt so good, but it wasn’t enough. It almost angered her. After all this and she was so close but still not yet there!

Then her arm stopped descending. The two held this 45 degree angle for a few seconds, arms quivering as they stalemated. Flitter took her eyes off their hands to look at her own arm. Her bicep had definitely not looked like that before. She shifted her position and found that feet now felt uncomfortable from the sandal tightening around it and her toes resting just past the edge of it.

She could do this now.

Her grimace of effort turned into a smile, strained as it may be, and Cloudchaser’s arm began to be pushed back. It was slow, but it was happening. Flitter barely paid attention to the few whoops from the others who came to watch since her eyes were fixed on Cloudchaser’s face. She didn’t want to miss the mix of emotions that kept flashing across her. Surprise, then shock, then anger, then panic as her arm went past the midpoint and began to fall down to her side.

“Ow! Ah, stop!” Cloudchaser cried. She let go and withdrew her hand. “Ah, I must have pulled something the other day when working out. Something in my side just twinged.”

Flitter knew it was a lie. Cloudchaser had taken it easy the past couple days. Still, it would be more fun to just salt the wound than humiliate her in front of her idols.

“That’s right. You have worked so hard lately. Sorry, that was totally unfair of me. Are you alright?” Flitter said as she approached and put a concerned arm around her sister. The others believed the honesty of her words, but Cloudchaser knew the mockery they hid. She glared at Flitter as she approached, but didn’t push her away. She couldn’t when she looked downward and became more concerned with how Flitter’s stomach area looked so defined all of a sudden.

They didn’t stay long after that. Cloudchaser made her excuses and the two left with Spitfire telling her not to overdo it before the final competition and telling Flitter to see about trying out some time. That last comment did not go over well with Cloudchaser who stalked off ahead of her sister as they walked home in silence.

When they walked through the front door of their home Cloudchaser angrily kicked her heels off.

“Thank you. Thank you so much for making me look like an idiot in front of them.”

“I dunno, you seemed to do that just fine without my help.”

She walked into the living room practically tearing her dress off. “I’m going to bed. I don’t know how you did that but it won’t happen again.”

“Are you sure about that?” said Flitter who followed in after breaking the straps of her sandals rather than taking them off, just to see that she could.

Cloudchaser whipped around to face her sister. “Yes I-” she paused and stared, “W-why am I looking you in the eyes?”

Chapter 5

Cloudchaser had not been looking forward to today.

Last night she had stomped off to bed after the very unwelcome surprise of her sister’s new height. It was purely out of anger, but as she laid there face down on her bed, failing for the longest time to sleep, she justified it as her knowing she’d deal with whatever this was better in the morning. She laid there so long she even halfway convinced herself that she had made some bizarre mistake. It must have been Flitter’s heels or her having sleep deprivation or something. Too much exercise, that was it! If only she’d taken it easier and not overdone it she wouldn’t have lost the arm wrestle and her eyes wouldn’t have played tricks on her!

The back of her mind told her that these weren’t at all true, but it felt convincing to her at three o’clock in the morning.

She awoke with the sun in her eyes and a strong desire to not get out of bed. However, that desire was quickly overridden by her need for the bathroom. Knocking back a couple drinks would do that to you the next day.

She ambled out of bed in her loose sleep shirt and pants and made her way to the bathroom, almost walking into the door as she did so. The door was closed, but whatever, she’d just wander on in. Stepping inside the bathroom her still waking brain heard the sounds of the shower running, but she continued as usual. They only had one bathroom and both of them tended to enjoy lengthy showers so it was generally agreed that as long as the curtain was drawn the other could do whatever they needed without it being weird.

After Cloudchaser had finished and stood up she went to walk away, but then had a rather nasty idea for her sister. She gave a groggy, smug smile at the toilet and pushed down the handle.

Within seconds there was a shriek from the shower as all the cold water disappeared from the system. Cloudchaser leaned on the bathroom counter for support as she laughed at her little prank. It had been years since she’d done something like that to her! She stopped laughing, however, when Flitter suddenly pulled aside the curtain.

“What the fuck, ‘Chaser?” she said as she stepped out, dripping wet.

Cloudchaser stumbled back as she approached and scanned her eyes up and down her sister’s body as she tried to take her in.

She was bigger than she remembered.

Flitter looked down at Cloudchaser as water continued to drip onto the floor. “You wake up and the first thing you do is try to scald me? Seriously?”

Cloudchaser only sensed the anger in Flitter’s eyes. She was much too focused on Flitter’s nose as she came to grips with the fact that she was at eye level with it.

“So am I going to get an ‘I’m sorry’ or...?”

Flitter stepped forward, her body pressing against Cloudchaser as she got in her face. The breath caught in Cloudchaser’s throat as the dampness of her now larger sister soaked into her clothes. Her eyes glanced down to see Flitter’s large breasts resting on top of her own, the water sliding down off her smooth skin to her-

“S-sorry sis,” the words finally forcing themselves out only after she closed her eyes.

“You’re so annoying.” Flitter stepped back into the shower and closed the curtain.

Cloudchaser stood there and breathed for a few more seconds. She hadn’t ever reacted that way to her sister. In fact, she couldn’t remember ever actually feeling cowed like that. It was strange, it was...

It was definitely a fluke.

That’s what she kept thinking in her head, anyway. She steeled herself and tried to dredge up her own anger again. Tried to remember how annoying it was that her sister thought, as hilarious as the idea was, that she had her beat for the first time in forever. Sure, it may have seemed like that, and she didn’t deny how impressive Flitter’s sudden improvements were, but they wouldn’t change everything so quickly like that.

She went back to her room and tossed the wet clothes into the laundry basket. She put on her athletic gear and looked at herself in the mirror, flexing as she did so. Yeah, she looked good. Really good. But, she couldn’t enjoy it as she once had since from what she had seen of Flitter today she now felt comparatively insufficient.

Whatever. This was merely a slight, and she definitely thought it was slight, difference in size and it wasn’t going to suddenly throw everything out of order. Her years of training couldn’t be outmatched that easily. She’d prove it to her.

*****

Cloudchaser waited downstairs for her sister to finish when finally she heard her heavy footsteps. She had something smartass ready to say in her head, but couldn’t get it out after seeing Flitter in her housecoat. It was a light blue robe with a little ‘F’ initialized onto it and while it was supposed to be big and fluffy it was now definitely insufficient for her body. Half of her forearms stuck out from the arms and the bottom was high enough on her that Cloudchaser was afraid of what she might see were Flitter to move too fast. Flitter also usually kept it done up tightly around her, but now she chose to let it hang loosely open, revealing the cleavage of her soft chest.

Cloudchaser watched her in the kitchen as Flitter poured herself a bowl of cereal and noted to herself that her sister had no issue reaching the top cupboards anymore. Flitter broke the silence. “Well, you sure seem ready for something.”

“Just thought I’d go for a little workout, y’know,” she tried to lean casually against the kitchen table, “I take it that you’re getting ready for a strenuous day on the couch?”

Flitter snorted. “No, I showered because I already did some exercises in my room this morning so I’m afraid that you’re the lazy one today. I’d be good for a run if you’re going to head out though.”

Cloudchaser told herself not to let the comment bother her. The mental mantra did little to help. “You sure? I’d hate to exhaust you.”

Flitter went to sit with her cereal, making sure to look down and give a little shoulder check to Cloudchaser as she walked past her to take a seat. Now that she wasn’t still pissed off from being briefly scalded she could appreciate the four inches of difference in their heights now. “Oh, I’m just bursting with energy lately. I’d be happy to join you if you aren’t worried about keeping up with me.”

“Look, I just hurt my arm yesterday, alright? Don’t make a big deal out of it.”

“I didn’t mention that, but oookay!” she said, not looking up from her bowl.

“That’s it, get dressed.” Cloudchaser grabbed Flitter’s arm and tried to pull her up. She was successful in lifting her off her seat since it was a surprise but then Flitter plopped herself back down.

“Lemme finish first, relax.”

“No way, I wanna go out and I’m not gonna let you get cocky from a couple almost victories. Now get up off your fat ass!”

Flitter actually stood up this time, snorting and choking back a laugh as she looked down at her sister.

“What? What’s so funny?”

“Really? ‘Fat’ ass? I thought you liked to poke fun at me being scrawny.” She turned around and playfully shimmied. “You noticed that improvement too, huh?”

Flitter hurriedly looked away. She wasn’t looking at her sister’s ass! Or not any more than she must have already done at least. How could she have missed it after the shower incident? Had she become so flustered then that she had really not looked? But she shouldn’t be upset that she hadn’t noticed it!

These thoughts raced through her head as Flitter continued to chuckle at her. “You good there, ‘Chaser?”

“Just get your butt upstairs,” she said, grabbing her arm again.

Flitter obliged and followed her this time. Whatever that sweatband had been doing she didn’t feel any hungrier than usual so she could afford to skip breakfast. Especially if the trade-off was to tease Cloudchaser more.

Walking to Flitter’s room she disrobed before Cloudchaser could look away. She could only imagine how much her new, obvious musculature must bother her. They were used to changing in front of each other, having been so close in age and sharing change rooms all their life, and they had at times been closer to each other than others would expect, but there was a different air now. Perhaps it was Cloudchaser’s frustration and envy or maybe because Flitter had lost much of the shyness she used to possess. Whatever it was, Flitter liked it and Cloudschaser very much did not.

The atmosphere between them was interrupted by Flitter’s grunting. “Hey, ‘Chaser, can you pull this up for me?”

Cloudchaser’s eyes bulged as she looked at the bottoms her sister was struggling with. They were athletic shorts that were bought at a size that would be tight around Flitter’s thighs, but those thighs were now much thicker with her new muscle. Cloudchaser figured that they wouldn’t fit her even without all her new muscle just from her general increase in size with her hips more wide set and her legs larger around.

“Yeah, that’s not going to work. You have something else to try?”

“Nothing I can exercise in. Unless you had something I could borrow?”

Cloudchaser froze. That idea absolutely could not happen. There was also a tone of something almost mischievous in Flitter’s voice that she couldn’t quite pick out, but she knew it would not be fun for her.

“Let’s try to get these on one more time.”

“No, ‘Chaser, how about we- hhaa!” Flitter made a funny noise as Cloudchaser grabbed her shorts and pulled them up hard. The material made little tearing noises as individual seams split. Flitter felt it begin to dig into parts that she was not comfortable having it press against and jerked herself forward while thrusting her butt back to push her sister away. With her ass being pushed out like that it was all the extra strain the material could take.

Ripping cleanly up the middle of her butt the shorts fell away to the ground. Cloudchaser recovered, having been knocked onto her ass herself as she was shoved backwards, and found herself looking up at a Flitter that reminded her more of the shy, nervous sister she was used to as she held up her small looking housecoat to keep her modesty.

“You okay?”

“Yeah, I’m fine.”

“Here, let me help,” Flitter said as Cloudchaser tried to stand up. Without prompting she reached an arm out and grabbed one of Cloudchaser’s arms in return then pulled, easily hauling her sister to her feet.

Cloudchaser stood there for a moment, feeling the hard muscle of Flitter’s arm relax as she steadied herself. Then when she realized she was almost unconsciously rubbing a thumb over the soft skin of her bicep she let go and swatted the arm away.

“I said I was fine, okay?” she snapped, “Don’t think you gotta jump to help me out just because you’re a little taller for whatever stupid reason.”

“Hey, ‘Chaser, I’m sorry. I was just trying to help you. I didn’t think I’d knock you down so easily.”

“It wasn’t easy! I was just off balance is all. And why don’t you help yourself first by finding something that’ll actually fit.”

Oh, her attitude wasn’t going to change at all was it? Fine, if she wanted to be mad then she would certainly be provided a reason to be mad. “Don’t worry, I know where to find something that’ll fit.”

Flitter dropped her robe and strode out of the room with Cloudchaser quickly following.

“Hey! I told you you can’t take my stuff!”

“Yes, you did say that.”

When Flitter’s hand reached her sister’s door that’s when Cloudchaser decided to physically intervene. She grabbed her waist and pulled.

Flitter snorted. “What, are you trying to suplex me or something? I don’t think you can even lift me anymore, can you?”

That did it. With a burst of effort she held her waist tightly, squatted, and lifted as hard as she could. It actually worked, briefly, but rather than a dramatic toss over her head or carrying her away as she may have done before now she could only muster the strength for a moment before the two toppled down together to the floor of the hallway between their rooms.

“Ow! Let go of me you psycho!”

Flitter twisted her torso as she tried to get a hand out to shove Cloudchaser back. Even as she did the two continued to swat at each other in a rather pitiful mimicry of an actual fight with Cloudchaser getting more and more frustrated as she found her grip being repeatedly broken and her arms shoved around by Flitter’s muscled limbs.

As Cloudchaser gradually got more frustrated by how hard she found it to fight back she made a poor decision and her fist connected with Flitter’s eye. The two immediately broke off as Flitter stepped back with a small, “Ah!”

The anger melted away from Cloudchaser. As Flitter nursed her eye she realized that she had fucked up. “Flitter, I’m sorry. I just-”

Flitter stood and went to her room, closing it with a slam. Cloudchaser chose to just lay there, thinking about it. Sure, that was wrong, but what was she supposed to do? She couldn’t just take her stuff like that. And she didn’t think she’d have as difficult a time as she did trying to pull her away. It was just so weird wrestling with someone bigger and stronger like that. And she wasn’t used to someone who could outdo her! And certainly not her sister.

Wait, did she seriously just wrestle with her naked sister?

Whatever, she needed a run.

Chapter 6

The day slowly passed with Cloudchaser finding opportunities to occupy her time elsewhere in town. When going around in her jogging gear she found that most guys were quite chatty with her which she took advantage of to provide her with an enjoyable distraction. Anything to keep her mind off of whatever it was going on with Flitter.

It was a good confidence boost, even if most of the boys so interested in her she normally wouldn’t bother to be this friendly with. After being around her growing sister she needed the reminder of how hot she was. Plus it meant that when buying snacks at the market they’d tend to throw in a bit more than she paid for so there were further benefits.

It was really cute to see guys get flustered around her. With a body like hers she had an intimidation factor that was always enjoyable. She got used to the way they would turn, look at her arms in surprise, then the eyes would snap to her torso catching her stomach area and then either working down to her dense legs or back up to her chest. She certainly didn’t mind this. In fact, it had been part of her motivation to push herself so hard. The effect of overshadowing her sister was purely accidental, but she hadn’t thought about it too much until now that things were changing.

Even as she tried to have fun by herself that thought kept popping into her mind. The idea that Flitter was really putting her in that sort of position. Or was she? Maybe her growth had finished. A weird spurt and it was all done maybe. She could live with her sister being her own size. About time she caught up too!

Cloudchaser retired to the park for the afternoon as the sun set on the town. Munching on some apples she’d bought she simply took in the sunset to put off going home and dealing with her sister for just a bit longer by resting against a tree overlooking the water of the small lake.

This relaxing was made challenging, however, when she heard a couple behind her who seemed to be having too good of a time. There were giggles as the guy and the girl teased each other and sounds that could only be the two kissing each other. It was only when she heard the guy ask “Can I touch them again?” that she stood up and turned around to confront them.

On the park bench sat a very surprised looking Flitter and Thunderlane looking at an equally shocked Cloudchaser. Thunderlane had been feeling Flitter’s biceps and he quickly pulled his hands away and sat on them. “Oh, uh, hey Cloudchaser. Your sis and I were just, y’know, hanging out.”

Cloudchaser was still taking in the sight. She could care less about who her sister was with, all she was concerned about was her sister’s appearance. Her arms were obviously bigger than this morning, now enough that even a big guy like Thunderlane looked comparable, and this trend continued with the rest of her body. The shirt was short enough to show her powerful abs and she wasn’t sure how she had gotten her legs into those jean shorts without ripping something. Even more concerning was that her head seemed to be just above Thunderlane who stood at 6’3.

Flitter acted casually. “Oh hey, ‘Chaser. Didn’t expect to see you here. Me and Thunderlane were just getting better acquainted.”

Thunderlane began to look embarrassed as Flitter grabbed his side and pulled him closer while he tried to explain things. “Well, I just saw her the other night at that event and after seeing her out today looking like that I mean who could blame me for not wanting to, uh, talk more, right?”

Cloudchaser still didn’t care, however. “Flitter, what did you do?”

“Hmm? I don’t know what you mean.”

“Yes you do, why- hey, that’s my shirt!” Cloudchaser had finally realized that the Junior Speedsters shirt Flitter had on could not come from her own closet since she’d never made the team back then.

Thunderlane quietly got up and whispered, “It’s getting late, I’ll talk to you later, Flitter,” before slinking away. He just wanted to make out, not get involved in family drama.

“Yeah, none of my stuff would fit so I had to use yours. The arms are just torn, it’s not a big deal. The pants were also a mistake, but oh well.”

Cloudchaser took a moment as she processed the attitude she was getting from her sister. Any ideas she had of the two smoothing things out were clearly out the window. Especially when she realized that those jean shorts had actually come from the pair of skinny jeans she had left on her bed.

“You bitch, you ripped them on purpose! There’s no way those fat legs of yours would have fit in them and you know it!”

“Oh, now they’re fat are they? Here, try saying that again to my face.”

Flitter stood up and got close to Cloudchaser to the point that their chests touched. Cloudchaser was no longer looking her sister in the nose, but now stared at her throat.

Cloudchaser stepped back as she realized. “How? How are you doing this?”

“I don’t know,” Flitter said with a casual flex of her arm, tearing the fabric a little more, “I guess breaking the lock on your door was more of a workout than I thought.”

Cloudchaser fumed. Thinking of nothing else she could say or do she walked away, but not before her anger forced something out one last dumb insult. “Your headband still looks stupid!”

Flitter simply smiled and waved at her, “Looking forward to my gains tomorrow. See you at home, workout buddy!”

Chapter 7

The following few days were tense. Cloudchaser had decided that interacting with Flitter was something she would rather not do thank you very much. Flitter wasn’t too surprised by this. She had stolen her clothes and broken her door so perhaps she’d gone too far? Probably not though. If it was too far then why did she enjoy it so much? In fact, she enjoyed it enough that she really didn’t feel like stopping.

For a few days after the incident Flitter did her best to act like things were still friendly. She certainly wasn’t about to stop since she oh so enjoyed getting on Cloudchaser’s nerves after years of being on the other end of things. Cloudchaser wasn’t having any of it though and didn’t respond to her sister’s appearance of kindness. She made breakfast and dinner for the both of them, but Cloudchaser only glared at Flitter as she piled food onto her plate to sustain her new hunger. Flitter joined her for her regular jogs and didn’t even outpace her, but she was pretty sure Cloudchaser noticed her breathing rate never increasing once. She didn’t do weights with her though perhaps it would have been better for Cloudchaser’s ego if she hadn’t said it was because what they had felt too light to be worth the time.

What Flitter was sure bugged Cloudchaser the most, however, was the way Flitter looked just doing anything at all. She had chosen to only wear her own clothing, but this was almost worse than stealing hers. Flitter had yet to get anything that would fit her new proportions so everything she had on was intended for a scrawny 5’2 girl but now it was having to cover a woman with over a foot more height and a lot more bulk.

These insufficient clothes led to ample issues throughout each day, which was bad enough for Cloudchaser, but things were only exacerbated by the new attitude that Flitter had adopted. This had started the evening after the incident in the park when Flitter came home and showered. Cloudchaser had expected her to come out in that undersized housecoat she had used this morning, but she made a funny choking noise when she saw her sister descend the stairs with only a towel wrapped around her waist. The breasts that hung freely were obviously larger than they had been this morning, taking up more of her chest and bouncing readily with each step.

“My housecoat is a bit more like a towel to me now,” Flitter laughed as she approached her sister, “You don’t mind if I walk around like this to dry off, right? These don’t bother you?” She pointed at her chest and Cloudchaser forced her eyes down into her magazine. “Of course they don’t.” She reached down, playfully tousled Cloudchaser’s hair, then went to the kitchen leaving her sister to do nothing but sit there going red in the face.

Her apparent attempts at kindness extended to her being more affectionate as well. They had always been touchy-feely in their relationship and now Cloudchaser absolutely hated that aspect. She was doing everything she could to avoid paying attention to her sister, but Flitter made that very difficult when she’d decided that she was now a hugger. She couldn’t avoid thinking about her when those thick arms of hers were wrapped around her, those round, heavy breasts pressed up under her chin, and the tightness of the hold on her ensuring that she knew the new strength she possessed.

It was also hard to ignore someone who just couldn’t seem to relax and settle. Flitter struggled to sit idly around the house like she used to as she seemed so full of energy that her body might well have been forcing her to remain active. Cloudchaser first noticed this when she caught her sister doing pushups while she waited for something in the oven. Flitter claimed that she just felt like it was the thing to do while she had the time to spare and from then on loudly shared her count of whatever she was doing since she knew how much those ever increasing numbers would bother her sister. All the time she’d normally spend on fiddling with her appearance was now being eaten up by exercise and stretching as if that had become a new hobby, but to Cloudchaser it looked more like an actual need that Flitter had. Even when she sat down to do something as simple as reading there was an arm or leg that kept moving and flexing.

This went on for three days as Cloudchaser refused to engage with Flitter’s antics which just made it all the easier for Flitter to tease her. Flitter even caught her sister staring more than a few times which only prompted her to do something with that attention like suddenly moving in such a way as to cause her clothes to tear a little. The noise and sight of the fabric giving, usually along her butt or chest, always made Cloudchaser hurriedly turn her attention away from her and cause Flitter to have to repress laughter. This teasing came to a head, however, on the fourth day when Flitter decided she was going to go out for the evening.

Cloudchaser was sulking again that night despite knowing that she had to get back to prepping for the Wonderbolts final trial. She was just not able to gather the willpower to do so knowing that her sister would tag along and cause all kinds of frustration. Sitting there her ears perked up as she heard a distinct clacking sound approaching. Flitter stepped into the room dressed up and ready for a night out. Cloudchaser immediately recognized what she was wearing.

“My red dress!”

Flitter feigned surprise. “Oh, now you talk to me?”

Cloudchaser stood up indignantly. “You can’t wear that!”

“Really? Because it seems it fits just fine.” Flitter tugged the dress up a bit. The front was not built to take breasts as big as hers and kept pulling down as she moved, but as she yanked it up the already short bottom was brought up revealing the lower part of her as in panties that were held tight, showing every curve of her. “The back was a tough fit though, mind taking a look?”

Flitter turned around and Cloudchaser looked in horror as there was a long split right down from Flitter’s muscled shoulders to her lower back. She continued to survey the damage her sister’s body had caused to it such as the arms being torn apart by her biceps, the bottom straining from her hips and butt, and the whole thing overall being so pulled out of shape she was sure it would never be wearable by her again. As Flitter turned to face her again and stepped closer she began to realize how great the height gap was now.

“Oh, did I make you speechless again, ‘Chaser?” She looked back and forth from Cloudchaser’s eyes and where she was staring. “What? Do you like being nearly eye level with my nipples? Well don’t worry. For one thing I couldn’t get any of your bras to work so I had to go without, but I think they look better free like this. And for another thing...” She took a step back and raised her right leg up with no issue at all maintaining her balance or stretching her muscles until her foot was right in Cloudchaser’s face. The heels she was wearing were also taken from her, but her toes were right off the end and the straps were holding so tight against her skin that they would leave marks. “I do have an extra six inches from these. I don’t think I’ll keep them though.” Flitter arched her foot and the straps snapped causing the heel to clatter the ground. She put her weight on her now bare foot and broke the other off as well.

“See, ‘Chaser? This is much better isn’t it?” She pulled her still stunned sister in for a hug. “Isn’t this nice? Your face goes right against my collar and my breasts can rest under your chin. I can even put my head on top of yours! You know what this means?

Flitter held her a little longer, letting her think, all while she enjoyed this perspective looking down at her sister so close to her and just loving how small she felt in her arms like this. Finally she released her, put her hands on her shoulders and pushed her away while bending over to look into her eyes.

“It means that you know how it feels now. What’s it like having a sister 8 inches taller? How does it feel to be me? Or what I used to be.”

Cloudchaser’s muteness was cured again as she steeled her jaw. “I didn’t do anything like this to you.”

“Ooooh really? Let’s think. How about that dance, grade eleven? Your dress didn’t get its alterations in time because of your little spurt and I so kindly let you take my favourite, the one I planned to wear, after you begged me. Then you ruined it. The whole thing was stretched out and completely unwearable after that night. Maybe your memory wasn’t jogged looking at me because,” she stretched her shoulders back behind her, causing the front of the dress to finally rip along the top of her breasts, “this one fits me much, much worse.”

Whatever fight Cloudchaser had left in her was finally gone. There was nothing she could say to her sister with her new attitude and there was no way she could do anything to her physically anymore.

“Fine, keep it then.”

“No thanks.”

Flitter reached her left arm down to her hip, balled some fabric in her hand, and pulled up and across her body. The fabric sheared easily from the power in Flitter’s arm it tearing cleanly apart until it was hanging limply with stray strands of thread floating idly in the air.

“It’s ruined. You can keep it.” Flitter said before flicking her wrist to toss the mess of red material in her sister’s face.

Cloudchaser pulled it down and simply stared as her favourite red dress lay tattered in her arms. Flitter spoke again, causing her head to shoot up to see her sister’s naked body walking away.

“I’m getting workout clothes that will actually fit me tomorrow and then you and I are going back to the gym. I’ll see you there.”