Halloween Year Round Store to serve San Antonio's Texans. Gibson Costume Shop Inc is San Antonio's largest complete store for costume rentals and costume sales for all occasions. We carry the largest array of costumes and accessories around. So whether you want to be a superhero or a swashbuckler, a gypsy, for halloween or a special event . Come and browse through thousands of items. Gibson Costume Shop Inc. Since 1928 We specialize in Ben Nye products. Why buy when you can rent costumes? We also, sell rental costumes! Come check out our inventory.