
Portman was unfamiliar with the franchise when she was cast, and watched the original Star Wars trilogy before filming began. The first film of the series, Episode I – The Phantom Menace was released in 1999, when she was in her final year of high school. Portman began filming the part of Padmé Amidala in the Star Wars prequel trilogy in 1997, which marked her first big-budget production. Also in 1996, Portman had brief roles in Woody Allen's musical Everyone Says I Love You and Tim Burton's comic science fiction film Mars Attacks!. Janet Maslin of The New York Times wrote, "Portman, a budding knockout, is scene-stealingly good even in an overly showy role." She subsequently went back to Stagedoor Manor to appear in a production of the musical Cabaret. Impressed by her performance in The Professional, the director Ted Demme cast her as a precocious teenager who flirts with her much-older neighbor (played by Timothy Hutton) in the ensemble comedy-drama Beautiful Girls (1996). Michael Mann offered her the small part of the suicidal stepdaughter of Al Pacino's character in the action film Heat (1995) for her ability to portray dysfunction without hysteria. She also enrolled at the Stagedoor Manor performing arts camp, where she played Anne Shirley in a staging of Anne of Green Gables.


In it she played a young girl coping with her mother's (played by Frances Conroy) cancer. After filming The Professional, Portman went back to school and during the summer break of 1994, she filmed a part in Marya Cohn's short film Developing.
