1. Ariana Grande raps Justin Bieber Backstage at the Billboard Music Awards 2013

    Ariana Grande raps Justin Bieber Backstage at the Billboard Music Awards 2013

    May 21, 2013 3:59 PM EDT Ariana Grande raps Justin Bieber Backstage at the Billboard Music Awards 2013 | See All Billboard Music Awards Videos BBMA , Ariana Grande , Justin Bieber Backstage BBMA 2013 BBMA 2013 Ariana Grande Justin Bieber Backstage ...