The 28-year-old critics' darling and fan favorite opens up about overcoming "debilitating" childhood anxiety through acting, moving to Hollywood at 15 (and changing her name and dyeing her hair), finding magical chemistry with Ryan Gosling in three films and, under the oversight of Damien Chazelle, breathing new life into the American movie musical.

Learn more about your ad choices. Visit megaphone.fm/adchoices