Christina Aguilera Christina Aguilera

Christina Aguilera is showing off her post-baby body.

At Sunday night's Breakthrough Prize Awards, the Voice coach walked the carpet in a bright red, plunging, long-sleeved dress. The singer gave birth to her second baby, Summer Rain, in August.

Check out photos of Christina Aguilera through the years

Aguilera also performed her hit "Beautiful" at the event, which honored pioneers in math and science. Her fiancé, Matthew Rutler, was also by her side during the night.

The 33-year-old isn't shy when it comes to showing off her bod. Earlier this year Aguilera posed nude while pregnant forV Magazine saying, "As a woman, I'm proud to embrace my body through all stages of life, staying fearless and confident in surrendering to the unknowns the future has in store."

See the photo here.

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