Watch the special James Corden Carpool Karaoke with Mariah Carey, Gwen Stefani, Adele, Lady Gaga, Selina Gomez, Demi Lovato, Nick Jonas, Chris Martin, Elton John, & the Red Hot Chili Peppers singing “All I Want For Christmas is You” by th one and only DIVA…Mariah! Enjoy this Christmas classic!