Ariana Grande and Pete Davidson go Instagram official with Harry Potter costumes

1:56pm PDT - May 30th, 2018    pete davidson - Mashable

It's happening, everyone: Ariana Grande and Pete Davidson are Instagram official. In a Harry Potter-themed post shared to Pete's Instagram account on Wednesday, the new couple posed in Hogwarts robes and sweatshirts — Pete dressed as a Gryffindor and Ariana a…