May 17, 2015
Taylor Swift opened Sunday night's Billboard Music Awards with the Joseph Kahn-directed video for "Bad Blood," a Britney-indebted mini saga co-starring so many people, including Lena Dunham, Mariska Hargitay, Ellen Pompeo, Cara Delevigne, Gigi Hadid, Cindy Crawford, Selena Gomez, Ellie Goulding, Hayley Williams, Serayah, Zendaya, and more. Kendrick Lamar appeared, and added two new verses to the song. The new version featuring him is on iTunes now.
