Alex and Sierra Win The X Factor: Their Top Performances

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The confetti has fallen. The mockery of Demi Lovato is over. And the votes are in:

Alex & Sierra are The X Factor Season 3 champions!

The talented, adorable duo beat out Jeff Gutt (second place) and Carlito Olivero (third place) on last night's finale - and they largely have their rendition of "Say Something" to thank for this honor.

Watch the emotional duet from this week's final performance show now:

Following the holidays, Alex says the pair will return to Los Angeles and work on their debut album.

"We're going to come out here for as long as the album takes. We're going to make sure that we do it right and do it quick and get it out so people don't get cold with us."

Until then, however, fans can relive some of Alex & Sierra's most impressive covers from the past several weeks on Fox.

Dating all the way back to one of their first auditions for The X Factor in October, here are four THG favorites:

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