WATCH: Demi Lovato Covers Mariah Carey’s “All I Want For Christmas Is You”


By Shari Weiss



Demi Lovato performed at the 2012 “Christmas in Washington” special, which aired on Friday.

The singer took on a holiday classic — Mariah Carey‘s “All I Want For Christmas Is You” — backed by a choir.

Check out the video below!

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