FF7:
Best: Aeris pink dress is iconic.
Worst: I would argue that while Scarlet has a keen sense of style, her split dress is a bit overdressed for most times we see her. Show some taste, dear.

FF8:
Best: Quite like the SeeD uniform, and Squall's casual ensemble. Edea looks great, though. tough choice, but I'll go for Edea.
Worst: Zell. Come on man. It's so embarrassing walking through towns with you.

FF9:
Best: Garnet's outfit is simple, practical and orange.
Worst: Kuja just cannot ever be warm in that.

FF10:
Best: Yuna.
Worst: Seymour. Cover that chest up. Sort you hair out. We all see what you're trying to do and we are not impressed.

FF12:
Best: Balthier. Just classy.
Worst: Penelo. Look like you're going swimming. But you're not. You're walking through town. Sort it out.

FF13:
Best: Vanille. Airy, comfortable.
Worst: Snow. Hate the hat/bandana/whatever

FF15:
Best: Ignis looks very smart in all outfits.
Worst: Ardyn looks like he's about to correct my grammar on reddit. I like his car, however.