Birch's portrayal of insecure teenager Jane Burnham in American Beauty, Sam Mendes' dark dramedy about the struggles of a middle class household, was roundly praised by critics, with Peter Travers of Rolling Stone writing that she with grown-up radiance". The performance earned her a BAFTA nomination for Best Supporting Actress, while the film was the recipient of the 1999 Academy Award for Best Picture and grossed over US$356 million worldwide, emerging as the biggest commercial success of Birch's career to date. She later said of the experience, "There was a lot of therapy involved … A lot of opening up and sharing things from our own lives about why we related to these characters.