Christina Aguilera Shows Off 30-Pound Weight Loss On ‘The Voice’ Finale

Christina Aguilera lost 30 pounds before returning to The Voice to perform “Feel This Moment” with Pitbull during the show’s season four finale on Tuesday night.

Aguilera, who is returning as a Voice judge next season, rocked the stage in a tight black pencil skirt, and a sheer metallic crop top that bared her toned abs over a hot pink bra. Blake Shelton, whose singer Danielle Bradbery won this year's competition, was in awe of the four-time Grammy winner’s body transformation. "How cool was that seeing Christina tonight?" Shelton said. "She looks amazing, by the way."

After an energetic and entertaining season with Shakira and Usher in the coach’s swivel chairs, Aguilera and Cee Lo Green will be returning to The Voice for its fifth season with Shelton and Adam Levine. Since taking her break from the singing talent show, Aguilera has been slimming down and promoting her new single.

Aguilera credits fitness pro Tee Sorge with getting her back in shape, and is eager to keep the weight off, as she’s enjoying flaunting her fitter body. "She's really into dresses that highlight her décolletage and her waist," her stylist Simone Harouche told Us Weekly. "She's showing off her amazing figure." In addition to her workouts with Sorge, Aguilera has also added yoga to her fitness routine.

The Voice season 5 will begin filming June 2013 and will premiere on NBC Sept. 23 at 8/7c.

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