Mariah Carey sings before President Barack Obama at Christmas event

Slideshow posted in Entertainment News | Monday, December 13, 2010

4 of 18: President Barack Obama, with his family Sasha Obama, first lady Michelle Obama, and Malia Obama, fourth from left, is applauded by, from second right, Mariah Carey, host Ellen DeGeneres, and other performers during the Annual Christmas in Washington presentation being taped at the National Building Museum in Washington, Sunday, Dec. 12, 2010. (AP Photo / Manuel Balce Ceneta)

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