Disclaimer: I know the Disney Princesses' have models who perform actions so that the animators can define how to draw that particular movement. However, I also believe that the animators draw inspiration from their voice actors. Also this article is just focused on the character's non-singing voice actor in the case that they have a separate one for when they sing.
1. Snow White: Adrianna Caselotti
Her features all in all are nearly identical to Snow White's. She has dark hair, pale skin, and hazel eyes. She has a simple nose, and is always smiling, which is also similar to Snow White. In fact, Snow White looks so close to her that it makes me think that it could probably be the reason that Snow White looks much older than her age. The main difference I see is the face shape, where as Adrianna's is oval, Snow White's is round.
2. Cinderella: Ilene Woods
She looks almost exactly like Cinderella. In the majority of pictures I could find, her hair goes from medium length to short but it is never long similar to Cinderella's. Their hair colors although both bright and blondish, are slightly different. However, they have the same small hear shaped face, with round noses, and small blue eyes.
3. Aurora: Mary Costa
Both ladies seem to enjoy keeping their hair long and fair. They are also both relatively tall. They have long faces and pretty features that compliment their long faces. In most of the pictures I found of Mary Costa she looked like she was day dreaming, similar to Aurora.
4. Belle: Paige O'Hara
When I was younger and I realized who the voice actress for Belle was, I was amazed because it looks like a real life Belle. They both have long brown hair, brown eyes, heart shaped faces, and pointed small noses.
5. Ariel: Jodie Benson
Jodie Benson and Ariel share similar face shapes, and tear drop chins. Their lips are cupid bows and are more full at the bottom. Jodie's strawberry colored hair is a natural form of Ariel's bright red hair. Both seem fairly tall.
6. Jasmine: Linda Larkin
These two have very different features. However, you can see how they share cheekbones, face shapes, and smiles.
7. Pocahontas: Irene Bedard
How similar do these two look? They have the same dark and native american eyes, they have beautiful long jet black hair, they have long faces, and ostentatious lips. This is the living Pocahontas!
8. Mulan: Ming Na Wen
Once again, another actress who looks nearly identical to their princess. They have the same hair color and texture, same eyes, and large rounded lips. They also have the same round noses. The way she holds herself up with confidence parallels the confidence Mulan stands with at the end of her movie.
9. Tiana: Anika Rose
Anika Rose and Tiana share the same brown eyes, medium sized round noses, and beautiful dark olive skin color. Like Tiana, Anika seems to wear her hair up a lot, in either a simple updo or a bun. Both are very hardworking and busy ladies always on the go!
10. Rapunzel: Mandy Moore
These two don't look very similar besides their lips and round faces. However the clear inspiration they took from Mandy Moore was a haircut she had once had to use to style Rapunzel's haircut at the end up of the movie. Both girls look great blonde or brunette!
View Part 2, to see the last 3 princess and how I rank who looks the most like their princess!