Heather Matarazzo is an American actress best known for her role as a geeky girl in the film Welcome to the Dollhouse (1995).
Her other movies include Sorority Boys, Scream 3, Saved!, and Hostel: Part 2.
Besides Dollhouse, she's best known for her role as Lilly in The Princess Diaries and The Princess Diaries 2: Royal Engagement.
She also had a regular role on the television series Now and Again, and has made guest appearances in a number of shows including ER, Roseanne, Law & Order and The L Word.
She also had a leading role in the short-lived lesbian-themed comedy series Exes & Oh's, in 2007. Matarazzo came out as a lesbian in 2004.