Mariah, Jimmy Fallon & The Roots Sing A Christmas Favorite

Mariah's "All I Want For Christmas Is You," is THE Christmas song, so naturally Jimmy and the Roots had to get involved to wish everyone a happy holidays!

Jimmy Fallon and the Roots usually bring us some pretty epic and hilarious musical segments on "The Tonight Show." With Christmas right around the corner they brought in Mariah to help them out and it's just as fantastic as you'd imagine.

Check out the video: