My main issue with her outfit are the flippin' shoes. She seems to always wears the wrong shoes. The colors on the outfit in the orig game were a bit painful though... BLINDING red and BRIGHT pink (or maybe that was due to my color settings). The colors do look a bit better in AC though. I still find her outfit to be eye-hurty... not so much because of the colors, but the arrangement/accessorizing of them. The skirt is not long enough, the short/cropped jacket doesn't really go with a long dress, the black ribbon necklace didn't really go with the ensemble, etc.
I never wear pink & red together though. Pink, I always combined with cream, or cream & brown.
Another eye-hurty outfit? Tifa's CC outfit. WTF. Why couldn't the designer (Nomura?) just leave it the way it was. I didn't mind the hat, or the skirt, but... the boots? The top? Nooooooo.
Overall, I prefer Tifa's wardrobe. I thought that her original (FFVII) outfit was cute. Was quite surprised when I found out that people thought that it was slutty.
+ also thought that it was funny that Tifa's pages in Ultimania included a "fashion" section/bit.