Post Malone is truly living up to the name of his hit song. The chart-topping artist's smash hit "Rockstar" featuring 21 Savage earned the award for Top Rap Song at the 2018 Billboard Music Awards Sunday night (May 20).

Dressed in a gold and black ’fit, Posty walked onstage to accept the award with 21 Savage right behind him. "This is pretty cool stuff, man," Post Malone said while holding his new trophy. "Thank y'all so much. This is my first award by the way... I just want to say thank you to everybody for supporting me, to my fans, Savage for doing this song with me. I guess my mama, my daddy. Everybody else, thank y'all so much... y'all rock. I don't know what to say, man."

The song from the Beerbongs & Bentley creator came out ahead of Cardi B's "Bodak Yellow (Money Moves)," DJ Khaled's "I'm the One" featuring Justin Bieber, Chance The Rapper and Lil Wayne, French Montana's "Unforgettable" featuring Swae Lee and Kendrick Lamar's "Humble."

"Rockstar," which has catapulted Post even further into the mainstream sphere, topped the Billboard Hot 100 for eight weeks straight upon its release. Earlier this year, Post's track also broke the Spotify global record for the longest No. 1 run on the brand's Global Chart.

Watch Post Malone's acceptance speech for Top Rap Song at the 2018 Billboard Music Awards below.

See Quavo, Lil Pump, Bhad Bhabie and More at the 2018 Billboard Music Awards

More From XXL