Pocahontus, because A) well-animated and B) her movie has a different, more adult vibe to it for the most part. I adore all the princesses (Tiana, Rapunzel, Belle, Jasmine, Mulan ALL OF THEM!) but Pocahontus would be my vote for the most convincing, and my favourite. This made me all introspective, wow ok.
XD; I am so torn... I never wanted to be a princess as a little girl (one of the few, it seems) but I still looked up to alot of the disney princesses... Ariel has to be my favorite, though. She hangs around with a real fishy crowd.... and has a real crabby friend.
Mulan, but Mulan wasn't a princess. In the sequel, she was even called upon by the emperor to escort 3 actual princess. And when she married Shang, she still didn't become a princess because he was a general, not a prince.
Mulan is my favorite, because she was a strong at heart and mind. She went out to fight in a war in place of her dad, knowing she could get herself and/or her family punished because it was only for men. She also didn't try and make herself pretty and wear dresses all the time relying on some prince to save her like some princesses.
Belle and Mulan are the best, but I don't consider Mulan a princess even if Disney marketing does. I just like my ladies strong and independent and willing to turn down dumb guys I like Tangled, but I wasn't a fan of Rapunzel's character.