The 22-year-old artist walked the carpet outside the Barclays Center in Brooklyn, New York, rocking a lilac suit, complete with a long cape, matching boots, and an off-the-shoulder cut lapel.
The performer also donned long, curly black locks to complement the quasi-retro glam ensemble.
One thing that was noticeably absent was his baby bump, which he's been showing off on Instagram over the past few weeks as part of his promotion for his forthcoming debut album -- which he's been referring to as his baby.
Speaking with ET's Rachel Smith on the red carpet, Lil Nas X joked, "I had to suck my belly in today, [but] the baby is very much here, it will be here in five days."
His hotly anticipated album -- featuring his recent singles "Call Me By Your Name," "Sun Goes Down," and "Industry Baby," is due out Sept. 17, and the artist teased of his long-gestating debut, "This baby is going to be a world changer!"