Wow, Katy Perry is on a roll with the hair dye! The long-time brunette recently hit the bleach bottle, enduring a transitionary ginger (which she absolutely hated) for a few weeks before stepping it up a notch to reveal blonde locks at The Smurfs premiere. But she mustn't have been too happy with the result, because only a week later she's gone pink! We're not sure we like the new look, it's a little Gwen Stefani circa 1998, don't you think? And what's with the amount of regrowth already?
