Original Song: "All I Want For Christmas Is You" by Mariah Carey. (The song was first recorded in 1966 by Carla Thomas.)
Cover Artist: The one-and-only former Disney star and sassy "X Factor USA" judge, Demi Lovato. She sang the song live as part of NBC's holiday special, "A White House Christmas."
How It's Different: Demi doesn't depart too much from the '90s classic version, but she proves in her performance that she's got vocal chops to match Mariah's -- which is an impressive feat.
Why We Love It: This rendition is pure pop perfection. (Not to mention, Demi's Twitter reactions to the event were adorable.)
Better than the Original? Michelle Obama was grinning throughout Demi's performance and so were we. Maybe it's time to retire Mariah's version and crown a new queen of Christmas pop...
Which do you like better: Demi or Mariah's version of "All I Want For Christmas"? Sound off in the comments below or tweet @huffpostteen!