Watch out, ladies ... and gents. The One Direction boys are back again on The X Factor USA stage to perform at their finale episode this season. Dressed pretty casually this time, the guys rocked out, performing their song "Midnight Memories." Of course, the crowd went wild.
— One Direction (@onedirection) December 19, 2013
After their performance, the 1D guys said they're going to go home for the holidays and get really fat, eating all their holiday food. Harry Styles insisted that he's been nice this year ... though many girls out there probably wish he'd be a little more naughty ...
DEMI AND ONE DIRECTION ARE FINALLY IN A PICTURE TOGETHER! DEMI AND NIALL OMG!! pic.twitter.com/BNzIjzLdb5
— staying strong. (@TrueDDLovatoFan) December 20, 2013