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Monroe Blondes

LIFE: On-set with Marilyn Monroe

With the approaching 50th anniversary of the iconic Marilyn Monroe's death, LIFE.com presents a collection of photographs made by LIFE's Ed Clark on the set of 'Gentlemen Prefer Blondes', showcasing Monroe as an already genuine, bona fide movie star, and that the 1953 production itself was going

to be a memorable, high-energy affair.