Taylor Swift, a seven-time Grammy winner, will open the “2015 Billboard Music Awards” with the world premiere of the most-highly anticipated new music video for “Bad Blood.” The never-before-seen video includes multiple starring roles played by a cast of Golden Globe winners, Emmy winners, Grammy winners, an Oscar nominee, blockbuster movie stars, as well as both new and iconic supermodels, and was directed by Joseph Kahn. The “2015 Billboard Music Awards” will be hosted by Ludacris and Chrissy Teigen and broadcast LIVE from the MGM Grand Garden Arena in Las Vegas.