Shelley appeared on the pages of Show magazine in a spread entitled "Shelley Hack, A Show First" in September of 1964. A & P heir Huntington Hartford discovered Shelley at a debutante ball, urged her to try modeling and put the 17-year-old high school student on the pages of his magazine. These are "first published pictures" of Shelley. A month later, she appeared on the November 1964 covers of Glamour and Seventeen, two major magazines. Twelve years later, she was a supermodel.