New CHRISTMAS Carpool Karaoke is the best yet

James Corden has released a brand new carpool karaoke video just in time for the holidays - featuring some surprise guests.

The video opens with Corden with his car loaded with Christmas presents, joined for the second time by Mariah Carey.

"What do you want for Christmas?" Corden asks.

"I don't know... I want you to sing my song," Carey replies coyly, before the two burst into a rendition of her Christmas smash hit All I Want for Christmas is You.

The video then reveals unseen footage from a number of Corden's other carpool karaoke specials, with him and a selection of musicians singing all to the song.

Given that Carey's song, first released in 1994, has become a modern Christmas classic, selling more than 14 million copies worldwide, the two make the perfect holiday treat.

- NZ Herald