In a callback to her 2010 film "Burlesque," the black-and-white shot features Aguilera posing with the same cropped blonde 'do she sported in the film. "Birthday Suit #44," she captioned it.
Christina Aguilera teased her upcoming Las Vegas residency with a rehearsal video where she performs a song from Burlesque for the ... from the soundtrack of the 2010 film, according to Setlist.fm ...