Happier Than Ever: A Love Letter to Los Angeles is a 2021 American concert film directed by Robert Rodriguez and Patrick Osborne, starring singer-songwriter Billie Eilish. It features performances of all 16 tracks from Eilish's second studio album, Happier Than Ever (2021), at the Hollywood Bowl amphitheater. She is accompanied by several musicians, including her brother Finneas O'Connell and the Los Angeles Philharmonic. Inspired by films like Who Framed Roger Rabbit (1988) and Cool World (1992), A Love Letter to Los Angeles blends live action and animation.