Ali Vincent (pictured above, via) is the winner of The Biggest Loser season 5. Ali Vincent is the first female Biggest Loser winner in the history of the NBC's reality show.
Ali Vincent who won the $250,000 grand prize weighed 234 lbs. when she first went on the show. The 32-year-old hairstylist from the Way Cool Hair Salon and Art Gallery at Mesa Arizona lost 47.86 percent of her total body weight, leaving her at 122 lbs.
Video: Biggest Loser Couples Finale: - Ali Vincent Is the Winner.