...Transform into a cat-girl! You'll behave more like a cat and gain some features like cat-ears and a tail and lastly, you'll shrink a little bit." Harriet said.
"A catgirl, nya?" Krystal said, after which she immediately slammed her hands against her mouth. She added that 'nya' there without noticing? That's when she noticed a tugging at her ears. As if someone was pulling them upwards. She went with her hands to her ears and felt them getting noticeably larger. They also changed shape to match those of a cat. When they stopped moving, they were so big, but she noticed that she also had more control over her ears. She could easily move her ears so that they were facing in other directions and she could also hear a lot more now.
Next up, she felt something push against her pants just above her bum. Pulling her pants down a little, she noticed a bulge in her panties that was getting larger and larger. Quickly pulling her panties down before it ripped revealed a quickly growing tail. It grew and grew untill it was even longer than her legs! Then a small bell with a ribbon appeared at the end of her new tail.
Lastly, she felt herself get shorter. She shrank just a little bit, but the effects were apparent, as her clothing now started sagging. She did her best to keep her pants and panties from falling down her legs because to her horror, her clothes weren't shrinking with her.
"Oops..." said Harriet as she noticed this. "I didn't mean for that to happen... but it is a good show, I'd say." she giggled, as she felt herself becoming a little bit stiffer. Looking down, she noticed that her legs had started fusing together and were slowly becoming more wood-like in appearance.
Meanwhile, Krystal had finished shrinking exactly 1 foot. She fell down on the ground and tried her best to burry herself in her now too big top. "Don't look, nya!" she yelled.
"Hey, it's okay," Rebecca said. "It's just the four of us here."
"But I'm so small, nya! And my clothes are way too big now, nya!" Krystal yelped, desperately trying to cover herself.
"Well it's not like we'll see anything we haven't already seen on ourselves yet," Saira said.
Krystal looked down at herself. She'd curled herself up in a ball and she was somehow able to fit entirely in her top. She didn't know what to feel. She'd always loved cats and always wondered what it'd be like to be one. When she heard she'd become a catgirl, she felt really happy about it, but she surely wasn't ready at all to start showing off her body, even to her best friends! "Please... can you find me some clothes, nya?" she asked.
"Hmm, well I think I still have an old set of clothes lying around. I'm afraid I don't have a matching set of underwear though," Rebecca said.
"That's okay... that'll do, nya," Krystal answered.
"Alright, I'll be right back!," Rebecca said.
A few minutes later, Krystal was wearing Rebecca's old clothes. A small top that was hugging her upper body which, to her horror, didn't do a lot to conceal her breasts, but at least it was something. She also didn't really like the fact that she was wearing a skirt without wearing panties underneath it, but at least she had enough room to let her tail out freely. With each swing of her tail, the little catbell ringed and she had to admit that it was quite enjoyable.
"You look amazing!" Rebecca said.
"Very cute," Saira said with a giggle.
"What they said," Harriet added.
Krystal blushed and said "Thanks, nya. I'm sorry for being like that earlier, nya. I guess you could say I'm a scaredy cat, nya."
All four girls started laughing at that but they were interrupted by Harriet letting out a loud moan. The transformation had reached her vagina. It slowly turned into wood, and with each second, the pleasure she felt increased.
"Wow. I was wondering what'd happen if the transformation arrived there," Saira said amused.
"Oh... shush!" Harriet said inbetween moans while her arousal only gerw. After a few minutes, it finally subsided a little as her entire lower body was now fully made of wood. She now felt something different in the place where her vagina used to be. It was something she couldn't quite explain, but it felt better than anything she'd ever felt. She decided to touch it with one of her hands, making the feeling even stronger!
"Wow," she thought to herself. "If this is how it feels to be a plant, then I wouldn't mind becoming one more often!"
As the other girls watch amused at Harriet's transformation, Krystal suddenly remembers that it's her turn now. "Rebecca! Transform or dare, nya!"
Rebecca, caught off-guard, thinks quickly and says...