James Corden Releases Star-Studded Holiday "Carpool Karaoke"

Harry Styles, Pink, Fifth Harmony, Kelly Clarkson and Bruno Mars are among the sing-along participants in the festive video.

James Corden got way, way into the spirit in a new Christmas "Carpool Karaoke" video posted Monday in which basically every star in the sky hopped into the passenger seat to spread some holiday cheer. Wearing their best/worst ugly sweaters, Corden and bandleader Reggie Watts got things going with a duo version of "Santa Claus Is Coming to Town," which jumped to a quick-cut montage of the song featuring Sam Smith with Fifth Harmony, Harry Styles, Bruno Mars, Pink, Kelly Clarkson, the Foo Fighters, Katy Perry, Miley Cyrus and Usher all chiming in.

So, basically, just about everyone who has taken a ride with Corden this year was there — yes, even Ed Sheeran. And sure, they were mostly wearing short-sleeve shirts and it was clearly warm and sunny in California, but if you close your eyes and wish real hard you might just get a very unexpected treat at the end.