I would like to think that the artists on the game, especially Akihiko Yoshida, would know the difference between artistically appealing and street corner dime bitch. While there have been a few bumps in the road here and there, Final Fantasy has usually(keyword) kept things classy, and they're ideally going to stick with that.

The most important thing is to keep artistic consistency, so if a certain outfit looks like it would fit within the style of Eorzea, then by all means go for it.