Taylor Swift, fun. and Maroon 5 lead the finalists with all three artists being finalists in 11 categories this year. Rihanna competed in 10 categories and Call Me Maybe's Carly Rae Jepsen was nominated in nine. The 2013 Billboard Music Awards airs live on Sunday, May 19 from the MGM Grand Garden in Las Vegas and Enstars has a list of all the night's winners as they are announced live.