Post Malone Performs His Biggest Hits & Proves His Haters Wrong at Billboard Music Awards Afterparty

Joe Janet
Post Malone performs at the Billboard Music Awards afterparty at Hakkasan in Las Vegas.

The "Rockstar" rapper capped off his award-winning night with a 5-song set at Hakkasan Las Vegas.

Post Malone had a pretty big Sunday, starting off the day by notching a third week at No. 1 on the Billboard 200 albums chart with beerbongs & bentleys, followed by his top rap song win for "Rockstar" (featuring 21 Savage) at the Billboard Music Awards and then a jaunt over to the Las Vegas Motor Speedway for a set at Electric Daisy Carnival.

But he was only getting started. Shortly after 1 a.m. early Monday morning (May 21), Post made his way into the VIP area on the fourth floor of Hakkasan Nightclub in the MGM Grand Las Vegas to cap off his successful Sunday by performing for and partying with a few thousand of his closest friends and followers at the official Billboard Music Awards afterparty.

Aside from his eye-catching black-and-white-striped two-piece ensemble -- which the artist poked fun at by chanting "Beetlejuice!" three times from the Hakkasan stage -- Post fit right in with the Vegas crowd, keeping his Bud Light and cigarette handy throughout the celebratory five-song set. In fact, he sometimes kept his cigarette so close, it was hanging from his mouth as he sang through the smoke. He kicked things off with "White Iverson," with the crowd happily finishing the lyrics of Post's breakthrough single whenever he pointed the mic their way.

The crowd was a huge part of the set, with the artist doling out high-fives to the clubgoers in reaching distance and one girl right outside VIP jumping up and down yelling, "I'm so happy! I'm so happy!" between songs. At one point, Malone joked of the intimate stage, "I am accepting tips tonight," prompting a few fans to toss bills onstage. (Good to have a rainy-day fund even when you're at the top.)

During the performance, Post took a moment to sit onstage and tell a story about his come-up, singling out the people who didn't think he would make it this far. "They said, 'You'll never win a Billboard Award. You'll never have the No. 1 album in the country,'" Malone said about his naysayers along the way. "I see those same motherfuckers every day, and you know what I say? 'Congratu-fucking-lations!'" he hollered before launching into his Billboard Hot 100 top 10 hit "Congratulations."

Post's VIP area was packed with famous friends, including T.I., Normani, French Montana and Halsey. Los Angeles DJ Justin Credible, who spun before and after Post's performance, saluted the A-list guests by playing Tip's "What You Know" and French's "Unforgettable" when the artists hit the booth.

Post Malone's Billboard Music Awards afterparty set list:

White Iverson
Candy Paint
Rockstar
Congratulations
Same Bitches