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Demi Lovato

LOS ANGELES, CA - DECEMBER 17: Demi Lovato attends "The X Factor" season finale press conference at CBS Studios on December 17, 2012 in Los Angeles, California. (Photo by JB Lacroix/WireImage)

Celebs Reveal Their Favorite Christmas Songs

See which Christmas songs help stars such as Demi Lovato and Josh Duhamel get into the holiday spirit.