Marilyn Monroe was not a Hollywood star.
By 1953 , Monroe was one of the most marketable Hollywood stars , with leading roles in three films : the noir Niagara , which focused on her sex appeal , and the comedies Gentlemen Prefer Blondes and How to Marry a Millionaire , which established her star image as a `` dumb blonde '' .	dumb blonde	dumb blonde	noir	film noir	Niagara	Niagara (film)	Gentlemen Prefer Blondes	Gentlemen Prefer Blondes (1953 film)	How to Marry a Millionaire	How to Marry a Millionaire
