While not a perfect movie, The Princess and the Frog really does have a lot going for it, and sadly doesn't get the recognition it deserves for doing right.
Another buzzfeed article with similar pre-production hand-drawn scenes from Disney (this time with three Disney princesses; Ariel, Tiana, and Rapunzel) that showcase the beauty of hand-drawn animation.
A buzzfeed article with nine GIFs that show pre-production Disney characters (including two Disney princesses - Ariel and RAPUNZEL!) being traditionally animated.