Popsugar Celebrity Halloween Costumes 2019 100+ of the Best Celebrity Halloween Costumes of All Time 350+ Celebrity Halloween Costumes That Are Hilarious, Spooky, and Downright Stylish 10 October 2019 by Lauren Turner View On One Page Photo 37 of 243 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 37 Adam Levine Adam Levine gave Rambo a run for his money at Maroon 5's Halloween party in 2010. Previous Next Start Slideshow Halloween Costumes 2019Couple Halloween CostumesPop Culture Halloween CostumesCelebrity Halloween CostumesHalloween CostumesHalloween