Britney Spears made a hilarious (and nostalgia-filled) appearance on James Corden's Carpool Karaoke segment on Thursday night, and we already can't get enough. While we love the fact that Britney sang some of her greatest hits while driving around town with James, including ". . . Baby One More Time" and "Oops! . . . I Did It Again," it was her facial expressions and reactions that really made us rediscover our love for her quirky personality. See all the times she was just so relatable below, then listen to her hot new album, Glory.