Capital Radio's annual Jingle Bell Ball was wall-to-wall celebs at London's O2 Arena as the stars came out to perform and celebrate at the event.
Taylor Swift, Jessie J, Sam Smith, Olly Murs, and Union J were all on hand with incredible performances throughout the evening, delighting the very vocal 16,000 strong crowd.
The boys of 5 Seconds of Summer performed their first single "She looked so perfect" and coincidentally looked so perfect themselves.
Unfortunately they were a man down but somehow seemed to rock the performance anyway.
Wasn't the same without Michael but we did our best, thanks jingle bell ball :-)— Luke Hemmings (@Luke5SOS) December 7, 2014
While Jessie J’s velvet hotpants and hair situation was probably one of the best we've seen.