clothing

I'm making a modern RPG set in school, but I really need just some simple generator parts, like different colored t-shirts, a backpack accessory, and jeans. maybe dresses and suits. I'm a really terrible artist, otherwise I would do it myself. At the very least, if anyone could make a t-shirt...

How much thought do we really put in to the costume design of our characters? How much "real-world" logic are we going to allow into our game(s)? What are your personal methods? Do you give that one chick gravity-defying hair, knowing fully well that hair doesn't work that way IRL? Or do you...