As December 21st marked the day Psy's "Gangnam Style" music video surpassed a billion views, it was also the night of NBC's broadcast of "Christmas at the White House". Psy was added to the line-up for the special event that raised money for charity.

During this annual event, Psy sang a clip of the Christmas Song and put on a special rendition of "Gangnam Style" in which he changed the lyrics into "Christmas Style". As he performed, the President and his family were delighted and happy to see the Korean sensation do what he does best on the stage.

Check out the video below!

What do you guys think of the Christmas version of "Gangnam Style"? Just in time for the Holiday season!