Christina Aguilera: Sexy Santa at Birthday Party!

Christina Aguilera wears a Santa hat while leaving a late night birthday party on Tuesday (December 18) in Los Angeles.

The 32-year-old The Voice coach wore a long coat over her Mickey Mouse t-shirt and fishnet stockings.

Earlier in the evening, Christina celebrated her birthday with her The Voice family during the show’s season finale episode, in which Cassadee Pope was crowned the winner!

In case you missed it, check out the performance of Xtina performing the song “Good Riddance (Time of Your Life)” with Adam Levine, Blake Shelton, and Cee Lo Green.