So, who's the sexiest of them all? Rihanna, Kate Beckinsale, Mila Kunis and Heidi Klum battle it out on the red carpet at 2016 Billboard Music Awards

It's one of the hottest music events of the year. So the stars certainly pulled out all the stops to sexy up the red carpet at the Billboard Music Awards in Las Vegas on Sunday night. Leading the way was Britney Spears, who was barely dressed in a sheer lace bodysuit over her underwear. Rihanna was remarkably toned down compared to previous years in a brown wrap dress, while it was left to actresses Kate Beckinsale and Mila Kunis and supermodel Heidi Klum to bring the glamour in their sparkly dresses. One of the night's big performances was Madonna, who teamed up with Stevie Wonder to pay tribute to Prince, following his death last month. see more at: http://www.dailymail.co.uk/home/index.html