Beauty girls start prepping for Halloween earlier than anyone else. They need to trick out their false lashes, master their Elsa braids, and practice their horrifying nail art skills. But the most important piece of the All Hallows' Eve puzzle is undoubtedly the makeup. We scoured Instagram for the most badass and brilliant artists to inspire your big look. Even if you didn't want to dress up this year, these snaps are bound to change your mind.