Madonna will be honoured with the Top Touring Artist award for her smash hit global MDNA trek at the Billboard Music Awards later this month (May13). The Material Girl's most recent 88-date world tour grossed more than $305 million (£190 million) in ticket sales and is in the top 10 highest-earning jaunts of all time. She will be feted for being the biggest-selling female touring artist in the world at the Billboard ceremony in Las Vegas on 19 May (13). The event also looks set to be a big night for Taylor Swift, fun. and Maroon 5, who are all up for 11 nominations each. Prince will be presented with the Billboard Icon Award.