Secret Hookups, Diva Fits & More Backstage Drama! Shocking Behind-The-Scenes Moments At The AMA Awards

21-year-old Justin Bieber was a nervous wreck before the AMAs. For hours leading up to his big performance, the "What Do You Mean?" singer was seen pacing back and forth beside his tour bus going over all the choreography, worrying about a possible throat infection!

Even though Carrie Underwood prefers to be reached via phonecall than text, she still revealed her favorite emoji: the pile of pooh!  

19-year-old Zendaya was determined to get that one perfect selfie! The singer spent a good 10-15 minutes posing with fans, not stopping until her fans got a good pic. 

This year's AMA host, Jennifer Lopez wished rapper, Diddy a happy birthay by telling him, "Happy Birthday ol man!" after Diddy tried leaned in for a hug. Unfortunatly for him, JLo pushed him away — playfully. Better luck next time, Diddy!

46-year-old bombshell, Gwen Stefani, was unable to keep her emotions in check, and left the stage in tears after her intense performance of "Used To Love You," a song which the singer has admitted was written as a post-breakup response to her divorce from ex husband, Gavin Rossdale. Good think Blake Shelton wasn't there to witness it!

Selena Gomez wasn't one to worry about the seating arrangements. Apparently, the 23-year-old singer knew all to well where on-and-off ex boyfriend Justin Bieber's tour bus was parked! The "Good For You" singer was caught sneaking sneaking around Justin's bus, all to wish him good luck before he took the stage. Rumors of the two getting back together sparked when the pair was spotted before the awards show at Montage Hotel in Beverly Hills, Calif. before the awards ceremony.

Talk about being a diva! Ariana Grande had a complete backstage meltdown about having her hair down for the first time on live television. According to an insider, the "Problem" singer immediately, "tossed up in a bun because she said she 'couldn't stand it' down in her face." 

Gigi Hadid wore a fabulous short bob hair style, reportedly as a tribute to her mother, Yolanda Foster. The young star wanted to show off just how much she reembled Yolanda in her earlier years, when she was also working as model.

Nicki Minaj reportedly looked "upset and annoyed" when trying to find a car service. Since bofriend, Meek Mill, was no where to be found, the 32-year-old singer instead had to entertain herself by scrolling through her Twitter.