When Gangster Squad opens Friday, audiences will again be treated to the sight of Emma Stone and her fierce, fiery locks. The red hair has become her calling card—too bad it ain't real.

Stone is one of many super-hot stars who is famed for store-bought red hair, and today (partly because of Stone) more and more celebrity babes are going red. But there are dilettantes, who'll be some other color next year, and then there are the girls who go red early and stay that way long enough that people assumed it's their natural shade. Well, for a surprising number of well-known gingers, it isn't.

Here are ten famous redheads who fooled a lot of people into thinking they were born that way.

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