Kelli Brianne Garner (born April 11, 1984) is an American film, stage, and television actress. Garner made her feature film debut in Larry Clark's thriller Bully (2001), followed by a supporting role as Faith Domergue in Martin Scorsese's The Aviator (2004). Over the following several years, she had lead roles in the films Thumbsucker (2005), Lars and the Real Girl (2007), and in the Disney animated film G-Force (2009).
More recent roles include the film Horns (2014) opposite Daniel Radcliffe, and the television film The Secret Life of Marilyn Monroe, in which Garner portrays Monroe.
Garner was born in Bakersfield, California. Although she described herself as a "shy" adolescent, Garner caught the attention of a talent agent while attending a friend's bar mitzvah, and was subsequently cast in an Eggo commercial. While a student at Thousand Oaks High School, Garner was cast in director Mike Mills's short film Architecture of Assurance in 2000. Garner was a talented soccer player in high school, and had planned on pursuing it as a career before she began working as an actress.