Mary Stuart Masterson (born June 28, 1966) is an American film, stage and television actor and director. Masterson was born in Manhattan to writer/director Peter Masterson and actor Carlin Glynn. She has two siblings: Peter Masterson Jr., and Alexandra Masterson, who are both involved in the entertainment industry. As a teen, she attended Stagedoor Manor Performing Arts Training Center in upstate New York with actors Robert Downey, Jr. and Jon Cryer. Later, she attended schools in New York, including eight months studying anthropology at New York University. Masterson's first film appearance was in The Stepford Wives (1975) at the age of eight, playing a daughter to her real-life father.
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