want to look smarter leaner and sexier get a shorter haircut follow the stars who went from boys to men what do you do when you want to let the world know that youve transitioned from a boy to a man our suggestion is simple shorten your mane teen pop sensation justin bieber has done it to change his image in a bid to appeal to a new demographic bieber has trimmed his signature mop top now known as the bieber bob that was literally his crowning glory he knows that as he grows older it will be harder to appeal to his fan base of young girls his spokesperson told an american daily while tweens mourned the lessening of his locks the spiky new look has earned him new admirers among older girls a decade ago justin timberlake had also successfully used the same strategy to shed his boy band image so shall we say snip snip justin bieber has left his mop top days behind for an image overhaul with a spiky new do im just trying to be like footballer david beckham he said in an interview bieber reportedly got the haircut to look grownup and appeal to a wider fan base when you dont want to crop too much of your locks slick them to one side like hrithik roshan does when he wants to look dapper his other trick to looking sexier a stubble stubbly men offer women the best worlds not too macho but mature enough when ashton kutcher arrived in hollywood he always had a baseball cap glued to his long ruffled hair but after meeting former wife demi moore he revamped his look to a shorter neater hairdo with just a little bit of scruff for his current look keep the length two inches in the front and an inch on either side actor ryan gosling has come a long way from his goofy notebook days the short top with cropped sides that he now sports is ideal for achieving versatility since you can wear it tousled or neat and achieve both hairstyles with the simple use of styling products in his 20year career shah rukh khan has experimented with a variety of looks both on and off the screen he is not one for cropped hair so when srk wants to switch from looking funnycute to serioussexy like in jab tak hai jaan above he changes his mane from silky and floppy to gelled and edgy