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In scenes depicting her as a child, the movie shows young Marilyn with light brown hair.

So, how didMonroe become the stunningly transformed blonde bombshellthat she’s known as today?

Marilyn Monroe posing black background

Hairdresser Sylvia Barnhart began the process of straightening Monroe’s hair, which in turn lightened her tresses.

Accordingly, Monroe’s hair was treated every three weeks with peroxide and bleach to maintain the platinum look.

Young Marilyn Monroe brown hair