Marilyn Monroe was 26 in Gentlemen Prefer Blondes when she played the character 'Lorelei Lee'.
That was over 71 years ago in 1953.
In 1962 she died aged just 36, starring in 94 films in her career, 73 of those after Gentlemen Prefer Blondes was first released. If she were alive today she would be 97.
In Gentlemen Prefer Blondes, I think Marilyn Monroe looks: