Well, it's hard for me to say, because there aren't too many FF characters with brown hair, but with my new haircut I kinda think I look a bit like a mix of Yuna, Yuffie, and Tifa (minus the chest, mind you), but mostly Yuffie. When I had my long wavy hair, though, I looked sort of like a brunette Celes.
So, what about you? What character looks like you the most?