Mariah Carey & Ellen DeGeneres: Christmas in DC!

Certainly one of the hottest holiday season celebrities, Mariah Carey was front and center at the National Building Museum in Washington, DC on Sunday (December 12).
Joined onstage by Ellen DeGeneres, the "Glitter" girl got a pat on her burgeoning baby belly as she taped material for TNT's Christmas in Washington 2010 special set to air on TNT December 17 at 8PM.

Also joining Mimi was husband Nick Cannon, while President Barack Obama, actress Miranda Cosgrove and "Glee" star Matthew Morrison also partook in the annual showcase.
Meanwhile, Mariah fans can catch the singer/actress in action as she's the featured guest on ABC’s “Extreme Makeover: Home Edition” airing tonight (December 12) at 8PM ET.
Miss Carey joins show regulars Ty Pennington, Michael Moloney, John Littlefield and Tracy Hutson is lending a much-needed helping hand to a family in Pensacola, Florida.
Enjoy the pictures of Mariah Carey with Ellen DeGeneres in Washington D.C. (December 12).