Born August 21, 1975, in Worcester, MA, Witt displayed a remarkable precocity from an early age. Talking by age two and reading by the age of four, she made her film debut in Dune at the age of nine and earned her high school GED when she was 14. Her next role of any import was on David Lynch's TV series Twin Peaks (1990) and was later followed by a secondary role in 1993's Bodies, Rest & Motion, co-starring Bridget Fonda, Phoebe Cates, Eric Stoltz, and Tim Roth. In 1994, Witt earned Sundance credibility with her turn as a murderous teen in Fun and the following year was introduced to a wider audience with her role as Cybill Shepard's daughter on Cybill. A variety of roles followed in films ranging from the desultory (1995's Four Rooms) to the delightful (Alexander Payne's 1996 satire Citizen Ruth). 1996 also saw Witt in one of her more recognizable roles, as one of Richard Dreyfuss' struggling band students in Mr. Holland's Opus. Her recognition was further heightened with her appearance in 1998's Urban Legends, in which she co-starred with a number of other nascently twinkling stars, including Jared Leto, Joshua Jackson, and Rebecca Gayheart.