Born Suzanne Burce, she began singing on radio while still a child, then entered films in musical roles at age 15; she soon became popular for her appealing screen persona and coloratura soprana voice. Powell played leads in a number of films, usually portraying sweet maidens in the midst of a first love. She peaked around 1954, then as she grew older she was unable to find suitable roles. She retired from the screen in 1958 but appeared in stock, nightclubs, and on TV. In 1973 she starred in the Broadway revival of the musical Irene. Married several times, her husbands have included writer-producer David Parlour and former child star Dickie Moore. She authored an autobiography, The Girl Next Door ... And How She Grew (1988).