One Direction made an appearance on 'The Tonight Show Starring Jimmy Fallon' and joined the show's host for a song, reported Ace Showbiz.
Harry Styles, Niall Horan, Zayn Malik, Louis Tomlinson and Liam Payne all looked cute in bright-coloured Christmas-y jumpers as they showcased their sweet vocals while playing instruments like snare drum, triangle and banana-shaped maraca alongside Fallon and the members of The Roots.