Again in the same year, she appeared in Not Another Teen Movie as Catherine Wyler, The Cruelest Girl in School.
The character is primarily a spoof of Kathryn Merteuil (played by Sarah Michelle Gellar) in Cruel Intentions, and was partially based on Mackenzie Siler (played by Anna Paquin) from She's All That.
In order to play a dominatrix, she convinced her father to sign a "nudity waiver".
For Best Performance by an Actress in a Supporting Role, Kirshner was able to win Genie nomination.
Her younger sister, Lauren Kirshner, a writer, was involved in the I Live Here project.
The following year, she starred in Atom Egoyan's Exotica. She also played Kitty Scherbatsky in the 1997 version of Anna Karenina.