This has to be one of the most hotly-anticipated episodes of Carpool Karaoke so far.
The good news? It more than lives up to expectations.
The 17-minute segment above starts with a rendition of Billie Eilish's "Bad Guy", then moves on to an entertaining discussion about meeting Justin Bieber, and some melodic singing over a ukelele.
Eilish then takes Corden to her actual house, to meet her mom and have a tour of the bedroom where she and her brother Finneas recorded the songs on her first album.
Oh, and Corden also gets to meet Eilish's pet spider, which he's less excited about.
