Mariah Carey sings before President Barack Obama at Christmas event

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

15 of 18: The first family, from second left, President Barack Obama, Malia Obama, Sasha Obama, first lady Michelle Obama, the first lady's mother, Marian Robinson watch 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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