Larisa Romanovna Oleynik (born June 7, 1981) is an American actress. Oleynik began her career as a child actor, first appearing onstage as young Cosette in a national touring production of Les Misérables (1989–1991). She was subsequently cast in the title role on the Nickelodeon sci-fi series
The Secret World of Alex Mack from 1994 to 1998. She also began a film career, starring in an ensemble cast as Dawn Schafer in the film adaptation
The Baby-Sitters Club (1995), and in a lead role in the teen comedy
10 Things I Hate About You (1999). Oleynik subsequently had a supporting role in the comedy
100 Girls (2000), after which she starred opposite Nastassja Kinski and Scarlett Johansson in the period film
An American Rhapsody (2001), and the independent drama
Bringing Rain ()