Mariah Carey sings before President Barack Obama at Christmas event

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

16 of 18: The first family from left, Malia Obama, Sasha Obama, President Barack Obama, first lady Michelle Obama, and the first lady's mother Marian Robinson pose with children dressed like elves at the National Building Museum in Washington Sunday, Dec. 12, 2010. (AP Photo / Manuel Balce Ceneta)

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