Barbara Feldon is an American actress and model, best known for her role as Agent 99 on the popular television series Get Smart, which aired from 1965 to 1970. Born on March 12, 1933, in Butler, Pennsylvania, she began her career in modeling before transitioning to acting. Feldon's performance earned her critical acclaim and a devoted fan base. In addition to her work on Get Smart, Feldon has appeared in various television shows and films throughout her career. She has also worked in theater and written a book titled "Living Alone and Loving It," which reflects her experiences and insights on single life.