Fall is officially Halloween season now, and even the food world is proving it. This September, Dairy Queen launched its very first Halloween-themed menu, the Spellbound Series, running September 28 through November 1. Its headline item, the Enchanted Oreo Blizzard, blends classic Oreo cookies with a shimmering purple, ube-flavored soft serve, a seasonal dessert designed to look as spooky as it tastes. When a brand built on ice cream cones commits an entire limited-time menu to Halloween, it’s a real signal of just how big the holiday has become in 2026. Halloween costume trends are following that same energy this year, moving away from one-off viral memes and back toward genuinely spooky, festive, classic Halloween costume ideas that actually capture the Halloween spirit of the season. Here are 10 costume ideas doing exactly that this October.