Christina Aguilera debuted her post-baby bod on Sunday night at the Breakthrough Prize Awards in Mountain View, California -- stepping out in a red Rubin Singer dress that showed off her incredible physique and killer cleavage.
In typical Christina fashion, the singer -- who gave birth to daughter Summer Rain Rutler back in August -- paired her red hot dress with a bold, matching lip, long blonde hair and a full face of makeup.
It's been less than three months since she gave birth to her first child with fiance Matt Rutler and she looks absolutely incredible! Baby Summer Rain joins her son with ex Jordan Bratman, Max.
She was joined on the red carpet with Rutler, who looked dapper in a suit.
On Friday, Aguilera revealed she's hard at work on new music, posting a photo of her in the studio on Twitter. We can't wait to her it!