Barbara Eden
While best known for her role in the popular 1960s sitcom "I Dream of Jeannie," Barbara Eden's blonde appearance initially defied the show's creators' preference for a brunette lead. They had aimed for a departure from "Bewitched," another fantasy sitcom with a blonde protagonist.
Barbara Eden's comedic talent, beauty, and perfect fit for the role ultimately led the creators to overlook this minor detail, and her portrayal made her a television star for many years.