When I intend to wear a costume all day at a con, I prefer natural fibers (like cotton and silk) against my skin.
Maybe I’m getting too old for this, I can’t bear running around in sweaty pvc leather and polyester anymore! When I intend to wear a costume all day at a con, I prefer natural fibers (like cotton and silk) against my skin. Functional (sportswear) fibers like spandex are also really comfortable to wear. If I need the costume to be made of sturdy pvc leather or plastic, I can at least line it with a softer fabric.