Mariah Carey & Matthew Morrison Sing in the Holidays!
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December 16, 2010
Mariah Carey, Miranda Cosgrove, Annie Lennox, Maxwell and Matthew Morrison are scheduled to sing in the holidays with host Ellen DeGeneres on TNT's 12th annual "Christmas in Washington" -- and ET has a sneak peek!
The holiday musical celebration, attended by President and Mrs. Obama and other Washington VIPs, takes place at the National Building Museum in the nation's capitol.
"Christmas in Washington" premieres Friday, Dec. 17 at 8 p.m. on TNT.
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