On Broadway, she won a Tony Award for her performance as Blanche Dubois in the original Broadway production of "A Streetcar Named Desire" in 1948. After this (she lost the film role to actress Vivien Leigh), she concentrated on the stage. In 1976, she and Cronyn joined the acting company of the Stratford Festival, and returned in 1980 to debut Cronyn's play Foxfire. In 1977, she earned her second Tony Award, for her performance (with Cronyn) in "The Gin Game" and her third Tony in 1982 for her performance, again with Cronyn, in Foxfire.