See photos from her new Playboy photoshoot.
Halsey's Playboy issue isn't the only reason to celebrate. After only three weeks on sale, Halsey sold out her Aug. 13, 2016 Madison Square Garden show.
She told Billboard, "The fact that my fans made this happen is groundbreaking. This is seriously unbelievable. Like literally unbelievable. I don't believe it -- someone show me the proof."