Christina Aguilera Channels ‘Burlesque’ Co-star Cher in Sexy Halloween Costume

Christina Aguilera transforms into her Burlesque costar Cher while Justin and Hailey Bieber make a cute Flintstones couple as they join stars dressing up on Halloween eve

Christina Aguilera Dresses Up as Cher for Halloween & Conjures 'Burlesque'!

Here Are The Biggest Revelations From Britney Spears’s Book — From Her Steamy Fling With Colin Farrell To Her Thoughts On Justin Timberlake And Christina Aguilera’s “Cruel” Collaboration