1. Rydia. I like the green outfit.
2. I don't know who Iris is, but I think Paine's attire is slightly better.
3. Dagger/Garnet.
4. Neither, really. For FFX Yuna, I like her yellow flower obi, but I'm not a fan of her skirt. Meanwhile, I'm not really a fan of Rosa's outfit, either. She doesn't look like a White Mage to me.
5. Adelle, even though the chibi-ish picture presented here may not be the most illustrative version of her.