Kelly Clarkson, Ed Sheeran, Meghan Trainor and John Legend are the latest big names added to the line-up of performers for the 2015 Billboard Music Awards. They’;ll join a star-filled bill which already includes Wiz Khalifa, Hozier, Nick Jonas and Sam Smith.The 2015 Billboard Music Awards returns to ABC on Sunday, May 17 at 8pm ET and will be held at the MGM Grand Garden Arena. Read More Billboard Music Awards 2015 Finalists: The Complete List As previously reported, Ludacris is headed back to Billboard’;s annual awards ceremony as co-host, and he’;ll be joined on stage by supermodel (and Legend's wife) Chrissy Teigen.Taylor Swift leads the pack with 14 nominations in 13 categories, though she’;s closely followed by Sam Smith (13), Iggy Azalea (12) and Trainor (nine). The full list of finalists was unveiled earlier this month.The 2015 Billboard Music Awards is