“I’ve been telling you guys that Mr. Hart has a juicy booty,” Pink hilariously told her Instagram followers ahead of Sunday’s show.
“He ripped his pants,” the Grammy winner, 43, revealed, with one of her friends chiming in to say that Hart’s bottoms “burst.”
When Pink asked the 47-year-old motorcycle racer “what happened” to his outfit, he replied, “The ass blew out of my pants.”
While Hart wore shorts in the social media upload, he was back in pants by the time he hit the carpet with Pink and their two children.
The couple’s 11-year-old daughter, Willow, rocked a black dress and glittery tights, while her brother, Jameson, 5, matched his dad in a black suit.
As for Pink, the songwriter stunned in a black-and-yellow vintage beaded dress by Cher favorite Bob Mackie.
The Daytime Emmy winner told ABC that her children were in attendance for a chance to see BTS, before the little ones clarified that they wanted to support their mom.
Hart said the same in an Instagram slideshow, writing, “The kiddos and myself supporting mama @pink on the red carpet!!! The kids and I were sitting back while mama was doing an interview. I saw a band that I recognized (which doesn’t happen very often) and I said to willow, ‘look it’s BST.’”
The preteen “just laughed and shook her head,” leading Hart to call himself “old.”
Pink posted event snaps of her own, writing, “It’s been five years since my last @amas … (hanging off the building) so I asked … if I could borrow a couple of legendary dresses.
“This is the first. Tonight I get to open the show with #NGNDA, and then I have the honor of celebrating the life of a legend, gone too soon- Dame Olivia Newton-John,” Pink continued, referencing her tribute performance honoring the late “Grease” star.
“She was an icon with a beautiful voice and an even bigger presence, always kind,” the “So What” singer gushed. “I look forward to honoring her tonight.”
The eight-time American Music Award winner did not receive nomination No. 9 this year.