Her looks brought an opportunity with the Ford Modeling Agency where she became one of its top Models during the 1970s. Hamilton graced the covers of many magazines, including Cosmopolitan, Fortune, Mademoiselle, Vogue Italia, Prevue, Neue Revue Illustrierte, Newsweek, Paris Match, Hello!, Redbook, Ladies' Home Journal, Glamour, Time, and many others. Some of her ad campaigns included Chanel, Clairol, Halston, Pucci and Hermès, and she appeared in over 150 commercials worldwide.