Victoria Justice & Justin Bieber: Christmas in Washington Airs Tonight!

Victoria Justice and Justin Bieber both sang out their favorite holiday tunes at the National Building Museum for the 2011 Christmas in Washington special.

The two joined host Conan O’Brien, Cee Lo Green, and Jennifer Hudson at the 30th Anniversary of the event.

The holiday tradition benefits the Children’s National Medical Center and is attended each year by the President and First Lady and other Washington VIPs.

Be sure to catch Justin and Vic on the special, which airs TONIGHT @ 8PM ET/PT on TNT.