The two girls start running and you feel yourself bouncing around a little, but not much as Amanda held you in place.
It was Maddi who crossed the finish line first and as Liz crossed the finish line, Maddi looked down as two b cup breasts grew in below Joey, followed promptly by a bra to hold them. Maddi looked at Liz, seeing her bare chest, before she shuddered and began to shrink into her clothes, which fell to the ground, empty. Maddi knelt down and shuffled through the clothes and found two pairs of panties. One was pure black, the other, a deep violet, Liz's favorite color, with the name Liz printed in elegant letters around the rim.
As she dropped her jogging shorts and removed her own panties, she wandered briefly if she would have turned into a pair of green panties with Maddi around the rim. She slid on the Liz panties and put her shorts back on before anyone else could see. She moved her hands down to her first breasts, joey, then to Liz's smaller breasts and squeezed each of them, her pussy getting moist from arousal. She picked up Liz's clothes and her own panties and made her way to the lockers.