Popsugar Celebrity Halloween Costumes 2018 Celebrity Halloween Costumes 2018 All the Celebrity Halloween Costumes We've Been Treated to This Year 1 November 2018 by Monica Sisavat Solís First Published: 24 October 2018 View On One Page Photo 72 of 100 ADVERTISEMENT () Start Slideshow View this post on Instagram A post shared by diplo (@diplo) on Oct 27, 2018 at 8:24am PDT Share This Link Copy ← Use Arrow Keys → 72 Diplo and Halsey as The Penguin and Poison Ivy Previous Next Start Slideshow Halloween Costumes 2018Pop Culture Halloween CostumesCelebrity InstagramsCelebrity Halloween CostumesCelebrity CouplesHalloween CostumesHalloween