Although Pam Dawber harbored hopes of a career as a musical comedy star, she found her niche on television. Born and raised in Michigan, the tall, vivacious beauty began her career as a model and appeared in several print and broadcast advertisements. After making her stage debut in the lead in the Goodspeed Opera House revival of "Sweet Adeline" (1977), Dawber landed her first feature role as the former girlfriend of the groom who makes a memorable entrance astride a horse in Robert Altman's "A Wedding" (1977). She then landed a leading role in a busted ABC pilot "Sister Terri" but the