As for girls who seem -completely- superficial, sense of style and all, I usually ignore them.
What I really, really don't like -and what's far worse- are girls who appear likeable at first and then turn out to be the ultimate morons. You know, who at first seem interesting, intelligent, and possibly eccentric, until you discover that they're really the same kind of ditzy, ignorant, manizing* fad-swallowers that most other girls seem to be.
*Made-up word; The definition's pretty obvious.