Music superstar Christina Aguilera will duet with James Corden in a new "Carpool Karaoke". Also in the special, MOM's Anna Faris and Academy and Emmy Award winner Allison Janney, The Big Bang Theory's Kunal Nayyar and Young Sheldon's Iain Armitage will join Corden for "Crosswalk the Musical: The Sound of Music." Corden and bandleader Reggie Watts will kick off the special with a Bruno Mars-inspired musical number, and Corden will share some of his favorite moments as host of The Late Late Show.