Justin Bieber may be smooth with the dance moves but is he just as good with a pair of scissors?
The teen sensation jokingly threatened to cut the long locks of his guitar player during his performance at Z100's annual Jingle Ball on Friday night at Madison Square Garden in New York.
Justin asked the crowd for its opinion on the musician's hair before getting back to the business of entertaining the mainly teen crowd, which shrieked throughout his show.
He also teased the audience with mistletoe - but offered no kisses, just a Christmas song.
Justin was the final act in a night that also featured performances from Taylor Swift, One Direction, Ne-Yo and The Wanted, who made a young girl's night by bringing her on-stage during "Glad You Came".