Have Katie wear transparent panties for the practice, since she will be having more accidents

"Just put these on - you're going to be pooping all practice long now." the coaches told her, tossing transparent panties to her.

Katie stared at them, but realized she really didn't have a choice. What else was she supposed to do? Slipping them on, she joined the other girls for the practice. Her face was a dark red as her butt was still dirty and here everyone could obviously see it. Even the bit of urine she let out while scared now sat obviously against the plastic material. The girls were told to do laps around the gym, which she followed their lead. She felt more bowel movements, leading her to shit out more waste into the panties. They sagged but held together with the added weight. Bouncing around her rear end, Katie realized her entire bottom was getting covered in it. Feeling grossed out, she wondered how today could possibly get any worse.