I don't see any significant difference. The characters don't always look exactly the same from one scene to the next, either.
While we're on the topic, am I the only person who hated how Tifa looked in Crisis Core? To me she looked like a half-witted jailbait loli, and her posture reminded me of nothing so much as Yin and Yang from the Nibelheim mansion. In every other version of the incident she looks fine, but by CC her costume is so skimpy, it's beyond belief. What kind of father would let his 15 (or 16?) year old daughter wander around the mountainside with two 1st class Soldiers dressed like that? She looked kind of ridiculous, in fact.