Christina Aguilera spent the weekend in Cancun promoting her upcoming movie “Burlesque.” The blonde star was joined by costar Kristen Bell and Cam Gigandet at a bash held by Sony Pictures for the flick cast. Directed by Steve Antin. Burlesque will hit theater on November 24, 2010. In other news, Christina has released the single cover for her second single “You Lost Me” from new album Bionic.