VIDEO: Christina Aguilera Appears on James Corden's Carpool Karaoke

James Corden takes full advantage of Christina Aguilera helping him get to work by asking for a little vocal and diva coaching from Christina, and Melissa McCarthy hops in to absolutely crush Redman's verse in "Dirrty." Watch the clip below!

Each weeknight, James Corden invites the audience to join in on the fun as the Emmy Award-winning THE LATE LATE SHOW WITH James Corden features a mix of celebrity guests, musical acts, games and sketches. The show regularly features viral segments such as "Carpool Karaoke," "Crosswalk the Musical," "Drop the Mic" and "Spill Your Guts or Fill Your Guts." The show holds the Youtube record for the most-watched late night clip with "Adele Carpool Karaoke," which has 179 million views. THE LATE LATE SHOW WITH James Corden airs weeknights (12:37-1:37 AM, ET/PT) on CBS. Ben Winston and Rob Crabbe are the executive producers.