Falk is a former
child model who worked at
Ford Models with
Brooke Shields. In 1978, at age 13, she appeared with Shields in
Life magazine, in a pictorial which received a great deal of media attention and helped propel the careers of Falk and Shields. She is featured on the cover of
Foreigner's 1979 album
Head Games. Her modeling work was featured in the book
Lisanne: A Young Model. She is best known for playing Heather McNamara in the dark comedy film
Heathers (1988). She retired from acting in 2002, but returned in 2024. ==Personal life==