I quite like the new outfits; I especially like how counter-productive Dawn's is; but nonetheless, I do like the outfit. "Pearl's" is about the only one I don't really have an opinion on, since it REALLY hasn't changed, from D/P; the only real significant difference is the long sleeves of his jumper, if I remember his clothing from D/P correctly...
But the playable characters have definitely got some interesting new clothing. I can't wait to get my copy when it (possibly) is imported from America by a store, thereby saving me a bit of cash on importing it, myself. ^^ *is cheap by a few pounds like that*