Mills was born in Chicago, Illinois. Her father was television executive Ted Mills, and her mother, Joan (née Paterson) Mills Kerr, was an author and editor for American Heritage magazine. Her stepmother was actress Genevieve (Ginette Marguerite Auger), and her stepfather was Chester B. Kerr, a director of Yale University Press. She has one sister, Hilary Mills Loomis, and one brother, Tony Mills. She received a B.A. magna cum laude in drama and art history from Yale University in 1973 and an M.A. from London Academy of Music and Dramatic Art.
Her first acting role on television was in the short-lived comedy The Associates, where she played an attorney, opposite Martin Short.
Mills appeared on a special "Celebrity TV Moms" episode of the Anne Robinson version of The Weakest Link, in which she was the second contestant eliminated.

Return to Alley Mills Autograph Profile