In this 9 September 1954 file photo, Marilyn Monroe poses over the updraft of a New York subway grate while filming The Seven Year Itch.Photograph: Matty Zimmerman/AP (Photograph: Matty Zimmerman/AP) There’s an unsettling moment in Marilyn Monroe: Hollywood Icon, a new exhibition opening in Los Angeles this weekend, where some of the star’s last recorded words emanate from the gallery walls.