I used pictures of what I think is their worse shot

Belle has beauty shots but also pretty, cute, homely, and even ugly shots.

Pocahontas Has beauty, homely, and ugly shots.

Jasmine that's the only shot of her I think is ugly.

Ariel she's only ugly in that one shot but that's because she's suppose to be ugly she does have beauty shots but sometimes she's just cute or pretty.

Mulan she's beautiful with long hair, in make-over, and in the final outfit, she's pretty in her training outfit with her short hair down, and kinda cute as a guy in a way.

Snow White she looks beautiful for the whole movie though sometimes her eyes looked weird.

Cinderella she looks gorgeous the whole time.

Tiana she's not human very long since she's a frog most of the time so it wasn't hard to make her look perfect.

Aurora she's gorgeous the whole movie there's not one bad shot of her they worked on the movie for 10 years and she was only in the movie for 18 minutes includeing when she's asleep.

Cinderella and Tiana look gorgeous in those shots

Belle: Pretty in general, but ugly in this picture.

Also:

Ariel: Very pretty during some scenes, like the ship scene and the Eric meeting on the rock, and Part of Your World (Reprise). This is canceled out though, due to numerous bad shots during Kiss the Girl (not all of them), but I think she looks at her worst during the whole Part of Your World scene-- the worst screencaps in my opinion nearly all come from that scene. If it wasn't for Part of Your World, Ariel would probably be my 5th Prettiest Princess.

Jasmine: Somewhat consistently drawn, but has shots that make me think she's my 2nd prettiest princess and shots that make me think she's my 9th. She's probably going to move down py prettinest list though.

Mulan: Well what do you expect? She looks more feminine in scenes when she's a girl (duh). So of course she's a bit inconsistently drawn, she's supposed to be!

I've kinda got a small list:

1) Belle, (everyone knows she is, I'm not going to explain)
2) Ariel (she is pretty inconsistent, but she has around 1/4 the faces that Belle does)
3) Jasmine (she just looks weird in some shots)
4) Mulan (sometimes her face is more rounded, like when she's crying on the dragon statue)
5) Poca (Just that closeup shot on her face, and that sometimes you see her nose and sometimes you don't)
6) Snow White (her only inconsistent shot is when she's screaming in the forest

The rest are all pretty consistent IMO.

You could give her different hair in every scene and they could all pass as completely different characters. :/

and ariel

I agree with firegirl1515's list

Just... look at the picture.

But Belle too. Also Aurora and Pocahontas

Much inconsistency..