Tiger Beat sensation Justin Bieber is used to startling attention being paid to his hair, from his infamous shag to his new cropped ’do. Now, the pop star seems to fashion himself something of a coif critic, ridiculing Prince William for his thinning hair in an interview with British magazine Rolla Coaster. “I mean, there are things to prevent that nowadays, like Propecia,” Bieber says. “I don’t know why he doesn’t just get those things, those products… Have you not got it over here?”
