Marilyn Monroe was involved in activities in the 1950s.
Marilyn Monroe . Famous for playing comic `` dumb blonde '' characters , she became one of the most popular sex symbols of the 1950s , emblematic of the era 's attitudes towards sexuality . 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 '' . After a critically acclaimed performance in Bus Stop ( 1956 ) and acting in the first independent production of MMP , The Prince and the Showgirl ( 1957 ) , she won a Golden Globe for Best Actress for Some Like It Hot ( 1959 ) .