Friends Justin Bieber & BloodPop Download 'Friends' on iTunes
This image appears in the gallery:
Celebrity Male Hairstyles: Top Knot Or Flop Knot?
The One Direction star has been steadily growing out his curly locks over the past year, to the point where his top knot has now become the stuff of legend. Guys of the showbiz world - consider the #ManBun bar well and truly set! Picture: Getty/PA