Christina Aguilera attends the UK premiere of 'Burlesque' at Empire Cinema

(December 12, 2010 - Source: Ian Gavan/Getty Images Europe) 

Christina Aguilera 'Burlesque' premiere held at Callao cinema

(December 10, 2010 - Source: Bauer Griffin)

Christina Aguilera arrives at the premiere of Screen Gems' "Burlesque" at Chinese Theater

(November 14, 2010 - Source: Jason Merritt/Getty Images North America)

Christina Aguilera receives a star on the Hollywood Walk of Fame during a ceremony in Hollywood

(November 15, 2010 - Source: FlynetPictures.com)

Christina Aguilera celebrates as she is honored on The Hollywood Walk Of Fame

(November 14, 2010 - Source: Jason Merritt/Getty Images North America)

Christina Aguilera arrives at the opening Gala and "Unmasking" for the Resnick Pavilion at LACMA

(September 24, 2010 - Source: Kevin Winter/Getty Images North America)

Christina Aguilera attends the global launch of The Montblanc John Lennon Edition writing instrument at Jazz at Lincoln Center

(September 11, 2010 - Source: Stephen Lovekin/Getty Images North America)