Popsugar Celebrity Diy Halloween Costumes 100+ Pop Culture Halloween Costume Ideas 500+ Pop Culture Halloween Costume Ideas That Will Make 2019 the Best Halloween Yet 27 October 2019 by Laura Marie Meyers View On One Page Photo 339 of 562 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 339 "A" From Pretty Little Liars What to wear: Black hoodie, black ski mask, black trousers, black gloves, black boots. Everything black. How to act: "A" is constantly sneaking around and causing mischief. Previous Next Start Slideshow DIY Halloween CostumesHalloween Costumes For MenGroup Halloween CostumesHalloween Costumes For WomenCouple Halloween CostumesPop Culture Halloween Costumes