I have to say Kukiel! She was SO adorable with her little ponytail and adorable smile!
But as for the cute that I know you obviously meant, coming from a girl, I'd have to say that I really like Orielle's design. She looked like she could be tough if she needed, but still kept her femininity! ^^
i kinda thought karane was the cutest, just the way her looks was kinda boyish but still was crushing on Pipit was absolutely adorable. i know zelda is prettier but really she did not seem like a cute princess but her outfit kinda made me think her as a farmgirl or a milkmaid.
I didn't read through the thread so I don't know if this girl has been mentioned, but the Items Check girl. She is the first girl that actually admits she wouldn't mind if something would happen with her and Link. Although, after this admission she starts to address Link as a creeper that just wants to check her out so I doubt if she was really interested.
I have to say, I think Zelda was the cutest character. Her Skyward Sword version is probably my favorite Zelda thus far; she definitely had a new look, and it was very nice. I also agree that the Items Check girl was cute, but, as was mentioned, she ended up somewhat creepy...
Me, when I was playing Skyward Sword I was kind of freaking out, because I found basically half the female cast to be attractive. I'm not really exaggerating. Outside of the old women and the little girl, holy crap.
Best is Kina though. Waitress at the Lumpy Pumpkin. Fricken' adorable. Zelda's way up there, and Orielle and Karane are awesome too, but... just Kina. <3