Unfortunately an international call for me.   But IMHO: Costumes can subtly give backstory.  The Jokers outfit, custom made, nothing traceable.  Aragorn in LOTR, his costume is functional, his coat has sleeves that can unlace and come off for warmer weather, his sword scabbard has eating utensils and a whetstone holder built into it...  etc etc etc. A good costume designer will add to the character with the choices made.  Thanks for coming to my TEDTalk. lol.