Katie peaked around the corner to where the girls were waiting for her, already she could Tricia and Karen had regressed to 13 while the others were 19 again. Katie smiled impishly as she watched the girls regress. She was looking forward to mothering the girls and putting them to bed early enough to enjoy a night out. As Katie thought about her plans for the evening she felt a small tug on her arm.
"Sis? What are you doing?"
Katie jumped at the voice and spun around. Mary Elise now stood before her with a curious expression on her face. The teen stared at Katie while adjusting her loosening clothes. "Why are you hiding," Mary asked as she became 18.
"Oh, uhm, no reason sis." Katie said with a little thrill of delight watching her twin starting to regress. "Are you feeling all right?"
"Yeah I think so, why?" Mary asked.
"No reason..."
Katie watched her sister as she became 17. The red head teen shrank slightly bringing her eye level with Katie. "I'm sorry Mary," Katie said to herself quietly. "I promise I'll take good care of you."
Slowly, Mary returned to 16. "You know sis, I kind of wonder sometimes what it would be like to be twins," the teen said as she shifted in her overly large clothes. "I mean, we're already like best friends, it would be so cool to be in college together."
Katie looked at her teenage sister with a little bit of guilt. She wasn't sure why she would try to exclude the others now, they had always been so close. Shrugging she tried her best to acknowledge the young teen. "Yeah I guess it will, but your only 15, there's nothing wrong with junior high," she said as she watched her become 15.
Mary giggled feeling a tickling feeling as her maturity started to fade away. Her shirt and pants were becoming increasing baggy with the pants threatening to slide of her narrow waist. Mary wiggled her toes inside her shoes finding them at least a few sizes too big. Finally Katie noticed her once impressive breasts had been reduced to a pair of small b cups. Mary sighed as she became 13 and looked up at her now older sister. "Yeah, I guess, its just gonna be no fun going through puberty alone."
Katie looked at the young red head, she wanted to tell her she was going to be back in the third grade in a few moments, to have Mary enjoy the moment. As it was though the girl passed from teen to preteen in moment. Mary shrank again becoming 11 leaving all signs of puberty behind.
Mary stopped and looked at her reflection in a store window. The ten year old girl in the window was a cute fair skinned red head with a smattering of freckles on her face. The clothing she wore was now comically oversized as she was barely able to hold her jeans on her waist. Katie watched as the girl shrank down to nine becoming shorter. She rose to the tips of her toes "Ooooo I need to get new clothes! These ones are way too big," she moaned. "Can I, please big sis?."
Katie smiled gently to the nine year old," Of course, Mary."
Mary finally stopped regressing becoming a tiny eight year old girl with bright red hair. She huffed as she kicked off her shoes and hiked up her pants. The young girl stuck out her tongue at Katie playfully. "Cool, then we can all go see the movies!"
The barefoot eight year old padded alongside her, which Katie couldn't help but find adorable. She realized she'd forgotten to wish all the girls clothes to change and wished for that next. Mary's oversized clothes shrank in an instant, becoming a pair of kaki pants that stopped at the shins, a pink shirt and pink converse sneakers. These swiftly all appeared on her diminutive frame as her hair re-aranged itself to a little ponytail. In all, she was now the very picture of an eight year old girl. Katie grinned and felt a rush of mischevious joy. She'd changed her sister and her friends now, and no one was aware. It was kind of fun being the one with the secret again, at least for a little while.