Because they look alike? They don't even sound the same...although I admit Ultimicia's powers where passed to Edea, who in turn gave them to Rinoa, I doubt Rinoa is Ultimicia...

Feel free to argue with me, just try to use more than two Brain cells to do it.
The two don't look alike. I agree woth Xxiawakin about it nor being ri-ri. the two have/had the same powers, but so did edea, so is ri-ri edea too?(sarcasm) All in all, I don't think that pale ri-ri is ultimecia. Hey, Xxiawakin, where'd you hear them talk?