E! News' Daily Pop co-host Justin Sylvester and Rocsi Diaz will be live onsite at the Microsoft Theatre in Los Angeles, with pop culture expert Naz Perez sharing their predictions on performances, who will win in the top categories and arrival reactions. iHeartMedia's Tanya Rad will also be hosting backstage interviews with Billboard Music Awards winners and finalists. The multi-platform programming-on-air, digital and across mobile and social.