Greta Gerwig's directorial debut and hit coming-of-age film centres on Christine "Lady Bird" McPherson (Saoirse Ronan) and her stormy yet special relationship with her mom (Laurie Metcalf). In the film, Chalamet plays Kyle, a guitar-playing, floppy-haired boy who says pretentious things like "I don't believe in money." The two connect, and Lady Bird learns valuable lessons about love and relationships during their time together.