Nominees in five categories for the 2015 Billboard Music Awards were revealed April 7 on US TV show "Good Morning America," with a full list to follow. US singer Taylor Swift and UK singer Sam Smith were nominated in four categories each. The five categories revealed so far are top artist, top male artist, top female artist, top Billboard 200 album and top Hot 100 song, all of which were announced by model Chrissy Teigen and Pete Wentz of Fall Out Boy. The Billboard Music Awards will take place in Las Vegas on May 17.