Mariah Carey sings before President Barack Obama at Christmas event

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

13 of 18: President Barack Obama, with his family first lady Michelle Obama, left, and their children Sasha Obama, obscured, and Malia Obama, third from left, are joined by from third right, Matthew Morrison, Mariah Carey, and host Ellen DeGeneres, during the Annual Christmas in Washington presentation, at the National Building Museum in Washington, Sunday, Dec. 12, 2010. (AP Photo / Manuel Balce Ceneta)

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