Christina Aguilera joined James Corden for a new episode of Carpool Karaoke and tries to educate James on her signature growl in “Fighter” (“That’s an angsty thing, you’ve got to get your fighter on”), her time in Mickey Mouse Club with Ryan Gosling (“I think there were crushes but I wasn’t on the train”) and Justin … Continue reading Christina Aguilera Gives Diva Lessons to Melissa McCarthy and James Corden in Carpool Karaoke: WATCH