Mary Stuart Masterson started acting before the age of ten, when she appeared in The Stepford Wives in 1975 with her father. Afterwards, at the direction of her parents, Mary Stuart led a life outside of the limelight, attending school in New York. She appeared in a few productions at New York's Dalton School. At the age of 15, the young actress appeared on Broadway in Eva Le Gallienne's version of Alice In Wonderland. She played two parts, the Four of Hearts and the Small White Rabbit. She returned to films in 1985 with the role of Dani in Heaven Help Us. For eight months afterwards, Mary Stuart attended New York University, where she studied anthropology.
Sister of actress Alexandra Masterson and actor Peter Masterson. Listed as one of twelve "Promising New Actors of 1987" in John Willis' Screen World, Vol. 39. Mary Stuart's first significant on-screen line in The Stepford Wives was "Daddy, I just saw a man carrying a naked lady." Daughter of writer/director/actor Peter Masterson and actress Carlin Glynn. She has received an Outer Critics' Circle Award nomination (2003) for Best Supporting Actress in the new revival of the Broadway musical "Nine". Was nominated for Broadway's 2003 Tony Award as Best Actress (Featured Role - Musical) for a revival of "Nine The Musical." Gave an interview in the 1980s in which she admitted to being a serious basketball fan. Measurements: 34B-23-35 1/2 (while filming "Benny & Joon"), (Source: Celebrity Sleuth magazine) Theatre World Award winner for her performance in the 2003 production of the Broadway musical "Nine". Sister-in-law of Jennifer Tost. Has never done a nude scene nor has she ever posed nude or topless in her career. She has received a Drama Desk Award nomination (2003) for Best Supporting Actress in the new revival of the Broadway musical "Nine". Shares a birthday with actor John Cusack.