The hard-earned costume changes will have some unspecified effect on gameplay: according to Rockstar's announcement, "the outfit will uniquely affect how the surrounding world responds to the game's protagonist, John Marston." We don't know what any of the three choices are, but people would respond differently to a man in one of those inflatable sumo wrestler costumes. Just putting that out there. More information about the challenges and the outfits will be released in January.
