Justin Bieber is just one of the guests singing on "Christmas in Washington" in front of President and Mrs. Obama, airing at 8 p.m. ET/PT on TNT.
Also performing are Usher, Mary J. Blige, Sugarland, Rob Thomas, and Neil Diamond.
Catch a preview of Justin singing "Some Day at Christmas" above.
What do you think of his outfit for the President?
