Forget plastic surgery, celebs are transforming their looks with hair makeovers! Natalie Portman made the bigest change going from brown to blonde – which do you prefer? Meanwhile, in Twitterville, Paris Jackson has been threatening to ‘do a Miley Cyrus’ and cut her long hair into a short crop. She even tweeted a pic of herself wearing a short wig. If there was ever a time to change your look now is it!