Popsugar Love Halloween Group of 3 Halloween Costume Ideas 18 Group of 3 Halloween Costume Ideas September 15, 2023 by Haley Lyndes View On One Page Photo 8 of 18 ADVERTISEMENT () Start Slideshow A post shared by Rachel Serio (@seriorachel) on Aug 26, 2017 at 11:42am PDT Share This Link Copy ← Use Arrow Keys → 8 Group Costumes For 3: Pink Ladies Calling all "Grease" fans! This is an easy option for a group of three to pull together, and it's fun — who doesn't love a rebellious trio? Previous Next Start Slideshow HalloweenHalloween CostumesFriendship