Marilyn Monroe stands on a subway grate, holding down her dress as the updraft blows it skyward, in a famous scene from the 1955 movie The Seven Year Itch. The film, directed by Billy Wilder, is about a middle-aged married man who has fantasies about an affair with the woman upstairs. Monroe played the woman upstairs, not the middle-aged man.
Marilyn Monroe's subway grate scene (or maybe it should be called Marilyn Monroe's dress-blowing-up scene) became an iconic moment for the actress. Monroe was born in 1926, so she turned 29 the year the movie was released.