Margot Robbie, America Ferrera and Greta Gerwig chat with ET's Denny Directo backstage at the 35th Annual Palm Springs International Film Festival Awards Gala. Greta reacts to winning 'Director of the Year' after presenting the same award to Quentin Tarantino in 2020. Plus, Margot and Greta say they'd be down to make a 'Barbie' musical.
