Christina Aguilera at the London premiere of "Burlesque"

Under her sexy new movies to the UK, Christina Aguilera was spotted in the London premiere of "Burlesque" in 13 day of December. The "Genie in a Bottle" babe showed up at the Empire Leicester Square in a flirty black dress, complete with a gray fur stole. Over the weekend, was Christina on stage in 'X Factor' final, where she sang along with Rebecca Ferguson.