Original: Her "dumb blonde" persona was used to comedic effect in such films as Gentlemen Prefer Blondes (1953), How to Marry a Millionaire (1953) and The Seven Year Itch (1955).
Simplified: Monroe's star grew with her acting in films such as Gentlemen Prefer Blondes, How to Marry a Millionaire, Some Like It Hot, and The Seven Year Itch.