When the pieces are dumped they are put in a trash bin to be picked up later in the girls locker.
The place that trash bin should have been was right in the way of the girls as they came in and Tiffany bumps into it and knocks it over scattering the pieces all over the floor.
The girls reach down and pick up a piece of the brightly colored blue fabric and it turns into a boy's swim suit that they are compelled to put on. This starts the changes in the girls.
Tiffany a slight looking girl with large breasts starts to change first. Her chest become very hairy. Her breasts become huge man boobs even though her waist was still quite slim. She developed 5 o'clock shadow being one of the early ones to have blossomed as a woman she is also is now one of the early bloomers as a man.
Bulah was a chubby girl and she became a rotund man. Her hair became a crew cut and she had barely any hair on her body. She did have one of the largest cocks of the group even rivaling the men.
All the girls changes and made their way to the men's locker but since they were originally women they remained attracted to men. This made them gay and the swim team grew closer. Chad now had so many more men to deal with. He had hoped that the women would stay women but he was a man so his body change only into men's swim suits and the girls had to change to fit the suits.