On Dec. 9, the 20-year-old "X Factor" judge took part in "Christmas In Washington," the annual concert to benefit the Children’s National Medical Center.
Lovato along with Diana Ross, Megan Hilty from the show "Smash," South Korean rapper Psy, and American Idol winner Scotty McCreery, performed with choir singers from DC at the the National Building Museum.
The "Give Your Heart A Break" singer is used to rubbing elbows with the stars, but meeting the President and First lady seemed to leave her star struck:
Oh My God.. I just met the President Of The United States!!!!! Our First Lady is Gorge. So excited right now!!!