Ariana Grande
There are many of young celebrities who have argued with Piers Morgan, but Ariana Grande is one of the few who has put him on blast in person. After Morgan picked a twitter fight with Grande’s mother, Grande turned the conversation on its head and had dinner with the host. He later posted a selfie with the singer and wrote, “We laughed, we argued, she cried, I nearly did, the drinks flowed & we bonded.”