Mariah Carey on ‘Christmas in Washington’: Sneak Preview! (VIDEO)

Mariah Carey is bringing her patented brand of holiday cheer to the nation’s capital, people!

The singer, who revealed this week that she’s expecting twins, will make her mark on TNT’s 12th annual Christmas in Washington, which airs Friday, December 17 at 8 p.m. Carey will join Miranda Cosgrove, Glee’s Matthew Morrison, Annie Lennox and Maxwell for the special, which will be hosted by Ellen DeGeneres and attended by President Barack Obama and his wife Michelle.

Can’t wait for the televised holiday joy? Take a sneak peek at Carey belting out “One Child” at the National Building Museum below:

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