After spending the last ten days teasing her new, celebrity-filled music video on Twitter and Instagram, Taylor Swift finally premiered “Bad Blood” during the Billboard Music Awards recently. Starring numerous T-Swift BFFs in the likes of like Karlie Kloss, Selena Gomez, Gigi Hadid, and Cara Delevingne, the clip finds the singer and pals in some kind of X-Men style school for badasses, with Cindy Crawford as the Headmistress. Watch above!