Hannah Shacklefort straightens out a display at The Ritz costume shop in Boulder on Tuesday. The longtime independent costume shop is gearing up for Halloween by stocking loads of seasonal getups, theatrical costumes, wigs and accessories. Check out Friday Magazine (inside) to see what costumes are trending this year and find a full list of more than 30 Halloween parties — from bar crawls to trick-or-treat streets — across Boulder County. Bonus: Check out page 18 for a guide to Colorado’s haunted houses.