Looking for the best duo Halloween costumes for 2025? From iconic Elmo and Cookie Monster to iconic pop culture duos, these easy and creative 2 person Halloween costume ideas are perfect for best friends, couples, or groups. Cute, funny, and comfy, these matching costume ideas are trending this Halloween! Find the perfect unique DIY or store-bought look for 2 that stands out at any party. #DuoCostumes #HalloweenCostumes #BestFriendCostumes #Halloween2025 #CouplesCostumes #DIYHalloween