Billie Eilish Does Carpool Karaoke! If you strapped in for Thursday's episode of Carpool Karaoke! you caught Billie Eilish riding shotgun with James Corden as they rocked out on some of her biggest hits. While driving through Los Angeles, The Late Late Show host learned about Eilish's obsession with Justin Bieber in between performances of "bad guy," "All the Good Girls Go to Hell," and "Ocean Eyes," plus a ukulele cover of the Beatles' "I Will". The pair even took a quick detour to the 18-year-old singer's home, where she introduced Corden to her pet spider. Spoiler alert: it didn't go well. Who have been your favorite stars to appear on Carpool Karaoke!?