In 2008, Ali Vincent lost 112 pounds and won $250,000.
Today, she's a speaker, spokeswoman, author, and soon-to-be creator of her own charitable foundation. And she says it all started with an open casting call in Phoenix.
The Biggest Loser crew will be at Superstition Springs Center in Mesa from 10 a.m. to 6 p.m. this Saturday, August 13.
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