Michelle Aguilar conquered all competitors last night on The Biggest Loser: Families. And she didn't hide her emotion after being named champion.

"I'm number one!" Michelle screamed, as the season's 15 other contestants congratulated her and confetti streamed down on the finale stage.

Aguilar, a 26-year-old assistant director from Ft. Worth, Texas, began the competition at 242 pounds and lost 132 pounds, sufficient for a 45.45% weight-loss percentage. She earned the show's $250,000 grand prize for her efforts.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.