Dunno. Looking at clothes of people like Yuffie in KH1, I don't think clothing is what they're worrying about. I think it went something like this, anyway.

Writer: We've decided we want Tifa in Kh2.
Nomura: Ok.
Writer: We want you to re-design her outfit.
Nomura: No. I redesigned the entire FF7 cast for Advent Children. Use that outfit.