Before she released her debut single “Sue Me” back in May, Audrey Hobert was best known as the childhood best friend/frequent songwriting partner of Gracie Abrams. It only took a few months for Hobert to become an ascendant pop star in her own right: Her album Who’s The Clown? came out in August, and last night she promoted it with a musical guest appearance The Tonight Show Starring Jimmy Fallon, appropriately singing “Sue Me” for her first-ever TV performance.