You just had a good idea as soon as you start running, but Maddi jumps ahead of everyone and you are forced to try to overtake her, but being as she is virtually flat chested and you are a little overweight, she crosses the finish line, followed by you, then Amanda, and finally, Liz.
You groan as you feel yourself getting smaller. Then your world goes white, then a pastel purple as you feel a strong pressure press up against you comfortably, not painfully. You realize that you have become Maddi's breasts until four o'clock in the afternoon tomorrow. You hear a faint, muffled sound as Liz and Maddie bet again.
"What do you want to bet?" Liz asked.
"Ooh, the last race of the day." Exclaimed Liz. "How about this. the loser turns into the winner's panties, while the winner gets the loser's breasts and bra as well."
"Alright, I'll go with it." Maddi agreed. they line up and the race begins...