Luckily, Lovatics can get a sneak peek look at Demi's performances of "Silent Night" and "All I Want For Christmas is You."
It's a total tease, to be sure, but we're looking forward to seeing her full performances.
Of the event, Demi tweeted after taping the special, "OH MY GOD.. I just met the PRESIDENT OF THE UNITED STATES!!!!! Our First Lady is GORGE. So excited right now!!!"
She added, "Such an honor singing for the President and the First Family."
Watch Demi on the Christmas in Washington special on Friday, December 21 at 8 p.m. ET/PT on TNT.
She'll be joined by Diana Ross, Megan Hilty, Chris Mann, Scotty McCreery, and PSY.