First Non-White Princess :) And the first Princess who doesn't have a dress.

First princess to not be white, only deuteragonist, first fiery princess, no dress, first to not hook up with a prince.

Jasmine :)

And Mulan

First non-white Princess... I think she deserves more acknowledgement for this, despite not being the main protagonist in her movie.
Also a completely different personality to her predecessors, a more fiery/assertive personality as opposed to bubbly and sweet.

Um... basically all the reasons that have already been mentioned.

She was the first non-white princess and the only princess who doesn't wear a dress (so far).

First non-white princess.

She brought insecurity to the lineup, something that had been missing before

She's great for all the reasons already mentioned plus has achieved so much considering she was a deuteragonist. A refreshing change from the previous princesses!

!!