She's been blonde her whole life, but Gossip Girl star Blake Lively says she liked switching up her style for her new movie: "For Green Lantern, I was a brunette . . . I loved having the brown hair." Blake also revealed that it wasn't her idea to make the change, but her bodyguard who turned out to be a closet comic book fan! "This man, who I’ve never heard him say more than four words — you would never pin him as a comic book fan — as soon as it came out that I was playing Carol Ferris/Star Sapphire, he was like, 'You have to dye your hair brown!' He said, 'Not only for my sake as a fan, but for your own security, I’m telling you, you have to dye your hair brown! People will attack you, people will be so angry.'" Most of you think that Amy Adams HAS to dye her hair to play Lois Lane, so we kind of get where her bodyguard is coming from! What do you think of Blake as a brunette? Do you wish she'd keep the colour in real life?