If Taylor Swift hadn't officially left country, this song and the song's music video did that for her. Swift premiered her video at the Billboard Music Awards Sunday night, debuting in 172 countries and 6 continents. So you know it had to be big, right? Swift plays "Catastrophe," and she's pretty much a super agent. Also featured in the video are Selena Gomez, Kendrick Lamar — obviously we know Tay Tay is a huge Kendrick fan — Lena Dunham, Hailee Steinfeld, Serayah, Gigi Hadid, Ellie Goulding, Martha Hunt, Cara Delevingn, Zendaya, Hayley Williams, Lily Aldridge, Karly Kloss, Jessica Alba, Ellen Pompeo, Mariska Hargitay and Cindy Crawford. Crazy, right?