Demi Lovato will perform with Psy and Diana Ross at the annual Christmas in Washington special airing Dec. 21 on TNT, reports THR. Conan O’Brien will lead the telecast, to be taped in Washington D.C.’s National Building Museum,
..for the second consecutive year. Also performing: Megan Hilty, former Voice finalist Chris Mann and American Idol winner Scotty McCreery. President Barack Obama and First Lady Michelle will attend.
CeCe Frey’s performance under!