(1 of 8) Blonde to BrunetteWho says blondes have more fun? These gorgeous stars are crossing over to the dark side and loving every minute of it! Whether going from platinum blonde to dark chestnut like Britney Spears, or keeping it more subdued like Keira Knightley, they all showed their true colors—as brunettes, of course! Keira Knightley Knightley lightens up her look at the Oscars with sunny blond ringlets, but things quickly turn dark at the Pirates of the Caribbean: Dead Man’s Chest premiere.
