A huge fan favorite Halloween '18 is obviously going to Post Malone. He's the literal 'Rockstar' of this generation. Everyone will be dressed as Post Malone this Halloween. Hell, a coworker just walked past me dressed as Post Malone as the type this. That being said, don't be so quick to say your version of Young Stoney is the best because Rita Ora jumped out the gate early and her costume is impeccable. There's also the fact that she had a Wembley Stadium to showcase her getup. If you need tips on how to be the best Post Malone you can, I'd start here.