Because the bathing suit that Marilyn wears in the film was so risqué for the time and caused such a commotion on the set, director Joseph M. Newman had to make it a closed set while she was filming.
According to film historian Jack Allen's audio commentary in the film's DVD release (2004), this was the first film in which Marilyn received the first positive reviews of her career, and the film that audiences noticed her for the first time ever, which makes no sense whatever as she had already appeared to considerable positive advantage in both "All About Eve" and "The Asphalt Jungle" the year before.
Marilyn Monroe doesn't appear in the film until the 31st minute.
Charley refers to Eadie as 'Cynara, Lilith, Cleopatra, and Helen of Troy'. "Cynara" is the title of a poem by Ernest Dowson (1867-1900) (as well as the title of movie Cynara (1932)). Lilith is also the name of a goddess/demon of the night (from Mesopotamian mythology).