Justin Bieber has a teeny haircut – and fans can grab hold of the offcuts

Justin Bieber has cut his hair. At the speed of scissors, the singer's feathered helmet head has disappeared, replaced with what he is calling, "kind of a mature look". Like the bones of a saint, the teen star's discarded locks are being collected for a charity auction. Admittedly, we don't often report on the vagaries of musicians' hairstyles. But this is no ordinary do: Bieber is a boy wonder, the biggest 16-year-old in the world, and for many, he has been defined by his floppy bowl-cut . It has inspired X Factor contestants , suburban barbers, sarcastic blogs , and countless school-notebook doodles. Bieber is a primal force, a kind of cherubic Stonehenge, in 2010-2011 fashion – at least from the hairline up. But as of yesterday, the reign of Bieber's coiff may have come to an end. "Thinking about getting a haircut," he tweeted , fairly harmlessly, yesterday. "Hmmmmmm." As the world's Beliebers crashed their browsers in anticipation, the singer strolled up to his usual hairdresser, Vanessa, and, er, reinvented himself. Bieber "wanted to change it up", he explained to TMZ . Photos of the new, "mature" do show a teenaged boy who simply looks groomed, neat, and rather conventional. That hasn't stopped the internet from going bonkers: #RIPhairflip, #hotnewsexydo and #GoodbyeFakeBeliebers were among Twitter's trending topics, with certain fans protesting, er, perhaps a little too much. "Yeah so it's true ... i got a lil haircut ..." Bieber admitted . "I like it ... and we are giving all the hair cut to charity to auction. Details coming soon." Given the philanthropic potential, we eagerly await the day Bieber begins to shave.