STAGE TUBE: Sneak Peek - NBC's THE BIGGEST LOSER Finale Airing 12/13

THE BIGGEST LOSER Finale airs on Tuesday, December 13th on NBC. In this must-see, exciting live finale, the contestants from this season return for a special reunion and a chance to weigh in one last time - and show America how much weight they've all lost since beginning their weight-loss journeys.

Those who have been eliminated will compete for the $100,000 "at home" prize. Then it's the moment viewers have been waiting for, when one of the three finalists will be named this season's "Biggest Loser" and win the coveted grand prize of $250,000! Alison Sweeney hosts the series, and trainers Bob Harper, Anna Kournikova and Dolvett Quince also star.

THE BIGGEST LOSER kicked off season 12 with two new trainers - renowned tennis star and certified trainer Anna Kournikova and fitness expert Dolvett Quince - joining "Biggest Loser" veteran Bob Harper. Under their supervision, 15 contestants came together hoping to transform their bodies, their health and ultimately, their lives.

To view a clip from next week's final episode, click below!