The Best Of Christmas | Alex & Sierra, Carly Rose Sonenclar and MORE! X Factor US

The Best Of Christmas from The X Factor US. With Alex & Sierra, Carly Rose Sonenclar, Carlito Olivero, Fifth Harmony and MORE! X Factor Global brings together the very best acts from around the world, keeping you up to date and ensuring that you never miss a thing! Watch more X Factor UK: Subscribe to X Factor Global: Watch more X Factor Global videos: