Marilyn Monroe's white halter dress blowing over a New York subway grate became one of the most famous images in film history, symbolizing both Hollywood glamour and Monroe's enduring legacy. Although filmed on location in Manhattan, the famous scene was later recreated on a studio set because crowd noise made the original footage unusable.

Tom Ewell reprised the role of Richard Sherman after originating the character on Broadway, bringing his Tony Award-winning performance from stage to screen.

Director Billy Wilder preferred filming in black and white, but the movie was shot in colour to meet Marilyn Monroe's contract with Twentieth Century-Fox. Monroe firmly believed that colour film captured her glamour and made her look much more striking on screen, so the studio required the production to use colour.

Because the era's Production Code dictated that adultery could never be played for laughs or shown, the plot was drastically rewritten from George Axelrod's original play. Instead of a consummated affair, Richard Sherman only fantasizes about cheating with "The Girl".