On screen Garner notably starred as real-life actress Faith Domergue, opposite Leonardo DiCaprio’s Howard Hughes, in Martin Scorsese’s award-winning The Aviator, and opposite Ryan Gosling in Craig Gillespie’s Lars and the Real Girl. She also appeared as the voice of Marcie in Hoyt Yeatman’s G-Force for producer Jerry Bruckheimer, in Ang Lee’s Taking Woodstock, and in the television series My Generation.

Other film credits include Stephen Herek’s Man of the House, Mike Mills’ Thumbsucker, Jason Matzner’s Dreamland, Hunter Richards’ London, Larry Clark’s Bully and Todd Louiso’s Love Liza, with Philip Seymour Hoffman.

On stage Garner most recently starred off-Broadway as the young Nina in the Classic Stage Company’s production of Chekhov’s The Seagull, directed by Viacheslav Dolgachev, with Dianne Wiest and Alan Cumming; in Bert V. Royal’s play, Dog Sees God, directed by Trip Cullman; and in Eric Bogosian’s play, 1+1, at NYSAF (New York Stage and Film) directed by Mark Brokaw.