Hollywood Stands Up To Cancer Presented By The Entertainment Industry Foundation And Event Chairs Jim Toth And Reese Witherspoon Benefiting Stand Up To Cancer - Inside [Getty Images]

CULVER CITY, CA - JANUARY 28: Recording artist Christina Aguilera performs onstage during Hollywood Stands Up To Cancer Event with contributors American Cancer Society and Bristol Myers Squibb hosted by Jim Toth and Reese Witherspoon and the Entertainment Industry Foundation on Tuesday, January 28, 2014 in Culver City, California. (Photo by Michael Buckner/Getty Images for Entertainment Industry Foundation)

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