The singer took Marjorie 'Nonna' Grande to the 2015 prizegiving, but didn't expect to see her backstage this year (16).

"She just surprised me in my dressing room," the thrilled Side To Side star explained. "I posted on Instagram that I missed her... and 10 minutes later she walked in my door."

It was a big save for the singer, because boyfriend Mac Miller could not make it the the AMAs - and so she was date-less.

"He's on tour," she said.