Hmmm, actually, I'm leaning towards Princess and the Frog. Traditional storyline, good amount of magic, a twist, staying away from modernization, someone changes in the end, happily ever after. It does lack a battle between the prince and the villain, though... but BATB just isn't as magical as the others. Also The Little Mermaid, too. I don't know, I'll have to see everyone else's arguments.

Because it is a typical fairy tale. Also maybe Sleeping Beauty.

Odd choice, but for me this movie is the princess movie concept in perfectionism.
Not Sleeping Beauty, because this movie is more or less a category on it's own. And also not Aladdin, because it's technically a Prince and not a Princess movie. And not PotF, because it's set too mich in the reality

this because its a classic... also i think Cinderella. Evrytime i think "Princess" Cinderella and Aurora pop into my head. They're just very traditional, i suppose.

The perfect blend of "rags to riches" and "prince wins the princess"

It's a classic fairy tale, with love at first sight, a handsome Prince/Knight in shining armor, magic, beautiful songs, and a romantic ending with good conquering evil.

or Beauty and the Beast :)

Or Cinderella. I think they are most representitive of a classic fairytale princess. I picked B&tB over Cindy because I believe Belle is a slightly stronger charactor. Plus Beauty and the Beast is the best disney princess movie in my opinion :)

I couldn't give enough reasons why without turning into an essay. So I'll just leave it at the Cinderella story seems realistic more (rags to riches, keep holding onto your dream mostly) and focuses mostly on the princess.

Either Cinderella or Tangled.