Date of Birth: November 10th 1982
At age 13, she made her feature-film debut in Welcome to the Dollhouse (1995) and won an Independent Spirit Award for Best Debut Performance for her work.
Heather became great friends with Anne Hathaway during the shooting of The Princess Diaries (2001). They still call each other frequently and hope to be friends for the rest of their lives.
In April 2005, she was the keynote speaker at the Gay, Lesbian and Straight Education Network of Boston's 15th annual conference, at Brookline High School, where she described her struggle to gain acceptance of her sexuality. "It was such a burden, because I had to pretend to be this person that I wasn't."
She is of completely Irish descent, and was adopted by an Italian American family.