The most common of Disney Princesses are:
Snow White,
Cinderella, Aurora (
Sleeping Beauty),
Belle (Beauty and the Beast),
Ariel (The Little Mermaid), and
Jasmine (Aladdin). Unfortunately, Cinderella and Belle are not
naturally born princesses and were merely
married into it.
Other lists of Disney Princesses have been known to include Pocahontas, Mulan, and Esmerelda (Hunchback of Notre Dame). Pocahontas is a close one and I'll accept her as a princess because she was the daughter of the chief and that's close enough for me. Mulan was not a princess but was a warrior. Granted, she's someone for young girls to admire, but I think that's aimed more towards the tomboyish girls than the girly girls and is not very princess-like. Esmerelda is clearly not a princess, but a gypsy from the streets.