Below are three shots of Joan Blackman with Elvis Presley in the 1962 movie Kid Galahad. As I have written before, short hair was fashionable on women in the 1950s and early 1960s. Or at least, relatively short. I wonder if there was some influence in this particular look on Joan Blackman from the style of Jackie Kennedy, then First Lady in the USA.
I have written at length (!) about short-haired women here. One of the women I featured was Elaine Sterling, who was a girlfriend and model for Larry Watson, a custom car man in California, and later a minor actor. These are photos of Elaine Sterling from the late 1950s, showing fashionably short hair. She was quite a pleasant-looking girl, but I suspect she was chosen mostly for her figure. (Nothing more is known of her. At least nothing I can find.)