Christina Aguilera has been a bad, bad girl. The pop princess lets go of her inhibitions for the night and strips down in the provocative video for “Not Myself Tonight,” the first single from her new album Bionic, due June 8. XXXtina hooks up with the same sex, unleashes her inner pussycat, and gets sinful in church in the Hype Williams-directed clip. She’s still got that “Dirrty” degree, indeed.