The 15 contestants will reunite to show off their physical transformations, revealing their combined weight loss of more than 1,700 pounds.
"After an exciting season that included an unforgettable trip to Utah Olympic Park to train with Olympic athletes, amazing makeovers with fashion icon Tim Gunn and celebrity hairstylist Ken Paves and the show's first ever sprint triathlon, it's time for all the contestants to weigh in one last time," NBC said in a release about the 15th edition of the show.
The three finalists competing for the $250,000 grand prize are 43-year-old David Brown, an Edmond, Okla., project manager for a construction company and social commerce leader for a phone company; 24-year-old, Los Angeles voice-over artist Rachel Frederickson; and 29-year-old Chicago attorney Bobby Saleem.
Ruben Studdard, the series' first celebrity contestant, will perform his single, "Meant to Be," from his latest CD, "Unconditional Love," on Tuesday's finale, NBC said.
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