The five of you push hard, but only you girls are trying hardest. Mark jumps ahead mid way through, leaving you behind Maddi, only by a hair. Behind you, Liz and then Amanda, push on, but know without saying that Maddi or yourself should be the winners, with Maddi's nearly flat chest and your small one.
With each step, the battle between you two gets fiercer, but with a final heave, Maddi passes you and crosses the finish line after Mark. As you all catch your breath, you, Amanda, and Liz look at Maddi expectantly, and Mark, not knowing what to expect, turns that way too in time to see Maddi's chest balloon outward, nearly ripping open her shirt, but snapping her bra, which wasn't made to accommodate C cup breasts.
"Oh, my god!" Mark gasps. "It does work!"
"The only way to know is to see it." You reply, a bit sad that you couldn't get the boob increase, but Maddi needed the self esteem boost more. "Now, are you ready to bet with us?"
"Hell yeah." Mark said.