Mariah Carey performs. REUTERS/Mario Anzuoni
Post Malone performs. REUTERS/Mario Anzuoni
Taylor Swift wins Favorite Album - Pop/Rock. REUTERS/Mario Anzuoni
Cardi B performs. REUTERS/Mario Anzuoni
The mother of XXXTentacion accepts his posthumous award for Favorite Album - Soul/R&B. REUTERS/Mario Anzuoni
Shawn Mendes performs Lost In Japan. REUTERS/Mario Anzuoni
Cardi B wins Favorite Artist - Rap/Hip-Hop. REUTERS/Mario Anzuoni
Jennifer Lopez performs. REUTERS/Mario Anzuoni
Tyler Joseph of Twenty One Pilots performs Jumpsuit. REUTERS/Mario Anzuoni
Taylor Swift performs I Did Something Bad. REUTERS/Mario Anzuoni
Post Malone poses backstage with his Favorite Male Artist Pop/Rock award. REUTERS/Mike Blake
Dua Lipa performs. REUTERS/Mario Anzuoni
Carrie Underwood performs. REUTERS/Mario Anzuoni
Camila Cabello poses backstage with her awards. REUTERS/Mike Blake
Halsey and Khalid perform Eastside. REUTERS/Mario Anzuoni
Presenters Rita Ora and Constance Wu for Favorite Duo or Group - Pop/Rock. REUTERS/Mario Anzuoni
Cardi B performs. REUTERS/Mario Anzuoni
Gladys Knight performs a tribute to Aretha Franklin. REUTERS/Mario Anzuoni
Presenters Bebe Rexha and Florida Georgia Line for Favorite Artist - Rap/Hip-Hop. REUTERS/Mario Anzuoni
Carrie Underwood wins Favorite Female Artist - Country. REUTERS/Mario Anzuoni
Ciara performs. REUTERS/Mario Anzuoni
Dua Lipa performs. REUTERS/Mario Anzuoni
Host Tracee Ellis Ross. REUTERS/Mario Anzuoni
Camila Cabello performs. REUTERS/Mario Anzuoni
Mariah Carey performs With You. REUTERS/Mario Anzuoni
Jennifer Lopez performs. REUTERS/Mario Anzuoni
Khalid wins Favorite Male Artist - Soul/R&B. REUTERS/Mario Anzuoni
Ella Mai performs. REUTERS/Mario Anzuoni
Kane Brown wins Favorite Male Artist - Country. REUTERS/Mario Anzuoni
Post Malone performs. REUTERS/Mario Anzuoni
Brian Kelley and Tyler Hubbard of Florida Georgia Line pose backstage with their award. REUTERS/Mike Blake
Camila Cabello wins Favorite Song - Pop/Rock. REUTERS/Mario Anzuoni
Ty Dolla Sign (L) and Post Malone perform. REUTERS/Mario Anzuoni
Migos wins Favorite Duo or Group - Pop/Rock. REUTERS/Mario Anzuoni
Lauren Daigle poses backstage with her award. REUTERS/Mike Blake
Shawn Mendes poses backstage with his Favorite Artist Adult Contemporary. REUTERS/Mike Blake
Host Tracee Ellis Ross. REUTERS/Mario Anzuoni
Post Malone wins Favorite Male Artist - Pop/Rock. REUTERS/Mario Anzuoni
Taylor Swift accepts Artist of the Year. REUTERS/Mario Anzuoni
Cardi B performs. REUTERS/Mario Anzuoni