Western costumes for adults don't begin and end with the cowboy, of course. Because there's plenty of other characters from the Wild West that make great Western costumes for adults! The sheriff and outlaw gunslinger are memorable choices from Spaghetti Westerns and we've got all-black costumes . Western Costumes. Howdy partner, take a ride back in time to the Wild, Wild West. The American west was a playground for all sorts, from pioneers and cowboys to lawmen, outlaws, gangs and gunslingers. Find all this and more within our Western Costumes section! Western Halloween Costumes!