Well, when it comes to fictional characters, characters in Japanese productions tend to dress (and hairdress) for coolness, whereas characters in western works more often dress for practicality and plainness. The Black/White 1 characters dressed in a remarkably plain style, especially compared to Ken Sugimori's designs before and after. Well, there were exceptions, like Elesa, Iris, Chauntal, and Team Plasma in general, but I liked that we weren't seeing quite as much of the likes of Candice's teenage schoolteacher getup or Dawn's ridiculously short skirt (and there was a reason for each of those Unova examples, besides Chauntal at least).