During filming of the shower scene, director Henry Hathaway had to keep yelling at Marilyn Monroe to keep away from the shower curtain and away from the lights as she insisted on being naked (as she was under the bed sheets at the beginning of the film). To pass the censors of the time, the scene was darkened in post-production.
Even though she had a starring role, Marilyn Monroe was still under contract to 20th Century-Fox as a stock actor at a fixed salary, so she actually made less money than her make-up man did.
The famous walk by Marilyn's character Rose Loomis across the cobblestone street holds the record for the longest walk in cinema history - 116 feet of film, or 26.92 seconds long.
First of three huge hits for Marilyn Monroe in 1953 - the others being Gli uomini preferiscono le bionde (1953) and Come sposare un milionario (1953). The trio grossed over $25,000,000, making it Monroe's most successful year of her film career.