The biographical details, fictionalized or not, are well-known: Norma Jean's humble roots, her mother's mental disorder and the young girl's foster home upbringing, an early marriage and working as a photographer's model while still in her teens and being promoted initially in her career as an image of naturalness, health, innocence, the all-American girl.
In The Seven Year Itch, she is a television and photographer's model who is identified only as `The Girl'.