Popsugar Fitness Halloween 16 Halloween Costumes For the Gym 16 Halloween Costumes For the Gym *and* the After Party September 26, 2024 by Christina Stiehl View On One Page Photo 14 of 17 ADVERTISEMENT () Start Slideshow View this post on Instagram A post shared by T R A C Y M U R I L L O (@contessatracy) Share This Link Copy ← Use Arrow Keys → 14 Devil Heat things up with this devil-inspired gym costume. All you need is some red activewear (we love this shimmery set), and a pair of devil horns. Previous Next Start Slideshow HalloweenHalloween CostumesGym CultureGymAthleisure