She's very different from other Disney princesses. For starters, she's not a princess for most of the movie. She's a waitress, and her dream is to open a restaurant. She's called, at different times in the movie, a "killjoy" and a "stick in the mud", and she values hard work far more than having fun. Most of her decisions are made with her goals in mind, and not based on emotion, specifically, and unlike NFs, even though she has a big dream, she works actively and pragmatically to make it happen in a realistic way. When she's not thinking about her past or her dream, her head is always planted firmly on the ground and on the goals at hand. That's why I think she's an xSTJ.
I agree that Tiana is xSTJ ... I was thinking ISTJ because she seems fairly reserved around people unless they're actively impeding her in some way (like Naveen was once they got stuck together) but maybe that's not the best way to judge the E/I split.
gigi_xo - I think Disney was trying to actively subvert their own stereotypes which is why Tiana is so much more practical than previous Disney heroines. And for me at least, it worked well in this movie!
^This makes me want to see it. Is there an annoyingly long end where they explain the value of friendship, like in Charlotte's Web?
Nope! The moral of the story is that what you need and what you want are often very different things, and getting what you need is going to make you happier in the long run. But they don't preach it at you that much.
I highly recommend it. If/when I have kids, I'm showing them that movie as much as I show them the other Disney classics, because the message(s) are so good, and Tiana is the best female role model of any Disney film EVER (besides Mulan and Belle, maybe).