Flitter Outgrows Her Sister

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.