VIDEO : Melissa McCarthy Crashed Christina Aguilera?s Carpool Karaoke

Christina Aguilera?s did Carpool Karaoke with The Late Late Show host James Corden.
Aguilera was on fire!
Then, Corden surprised her by bringing comedy actress Melissa McCarthy.
Christina taught the actress and James Corden how to belt out some hits.
Her amazing voice makes this most recent episode something to watch.
In the segment, Christina taught Corden and McCarthy how to be divas.