MAria sprayed the rest on herself before Erica could grab the bottle away from her. Erica was much stronger then her Big sister now so it was not a problem. Her sister who was 16 was curently smaller then her now by a couple inches, but her chest was still much bigger. MAria had a D cup chest, while Erica's had only increased to a with her age progresion. Erica frowned relizing that MAria was going to probly going to have a growth spurt because of the Spray.
But something strange was happening. Maria looked smaller, Was she shrinking? She had lost about 3 inches of height, when all of a sudden her chest seem to deflate. Her perky round D cups receeded into her chest leaving her shirt stretched and loose and her Bra empty and lifeless. Her jeans dropped to the floor as her Hips narrowed and legs shortened. The changes stopped and there before Erica stood a 7 or 8 year old version of her Big Sister in an oversized tank top and bra and her pants pooled around her ankles.
Erica coulnd help it, she started laughing.