Stewart was born and raised in Los Angeles, California. Her father, John Stewart, is a stage manager and television producer who has worked for Fox. Her mother, Jules Mann-Stewart, is a script supervisor originally from Maroochydore, Queensland, Australia, who has also directed a film.
She has an older brother, Cameron B. Stewart, and two adopted brothers, Dana and Taylor. Stewart attended school until the seventh grade and then continued her education by correspondence until completing high school.
