Rachel Frederickson dropped 155 pounds, beating fellow contestants Bobby Saleem and David Brown for the $250,000 top prize.
Now, the voiceover artist from L.A. is under fire for being too thin, with many fans worried about her health. Read their tweets here.
The 24-year-old started the show at 260 pounds and shed nearly 60 percent of her body weight, now weighing in at 105.
Speaking with People after the show, Rachel could not have been happier. She told the mag, "I came here to gain back my life, and I did exactly that. I've found that proud, confident girl that has so much respect for herself."
“The Biggest Loser” crowned a new winner, and stirred up some controversy on Tuesday night’s finale.