Christina Aguilera's Tips for Slimming Down: 'Laughter, Happiness... and Yoga' [ZhyY4Tv2GD]

Oprah Launches First-Ever Weight Loss Gummy. Christina Aguilera's Tips for Slimming Down: 'Laughter, Happiness... and Yoga' [ZhyY4Tv2GD]

"Extra's" Terri Seymour sat down with the coaches of "The Voice" -- Adam Levine, CeeLo Green, Blake Shelton and Christina Aguilera -- to talk about the upcoming season finale, while Xtina shared her secret for looking so good.