She appeared in the film Last Rites at age three.
She co-starred with the Olsen twins as Kristen in the 1998 film Billboard Dad.
She was raised by producers Deborah Pratt and Donald P. Bellisario and her half-brother is actor Michael Bellisario. She began dating actor Patrick J. Adams after working with him in theater, and appeared alongside him in Pretty Little Liars and The Come Up. They married in December 2016 and are currently expecting their first child together.