'The Biggest Loser' Season 14 Winner Is … [Photos]

SPOILERS AHEAD!

After weeks of grueling workouts, Danni Allen, Jeff Nichols, and Jackson Carter were the remaining contestants competing for the big prize on Monday's "Biggest Loser."

And winner is … 26-year-old advertising account coordinator Danni Allen, who lost 121 pounds and gained the season's $250,000 grand prize. Allen, who began the season weighing 258 pounds, caused the celebratory confetti to rain down on the finale stage after losing 46.9 percent of her body weight.

Just missing that quarter of a million dollar prize: pharmaceutical rep Jeff Nichols, who lost 181 pounds off his 388-pound frame. The 25-year-old lost 46.65 percent of his total weight.

And in third place: 22-year-old fan favorite Jackson Carter, who lost 138 pounds -- 42.07 percent of his body weight -- from his 328-pound starting weight.

Attorney Gina McDonald, the 47-year-old Alabama native, was the at-home winner, earning $100,000 by losing 113 pounds, 46.12 percent of her body weight, from her 245-pound starting point.

Click through our "Biggest Loser" Season 14 slideshow for the incredible, inspiring before-and-after photos of the contestants, including the brave teen trio who shared their weight-loss journeys with America: