Now this is just my point of view, but I find it a little bit ironic that one of the most realistically portrayed Disney females comes in the shape of a pixie! When it comes to typical proportions, the average woman can more easily identify with a winged sprite?! I mean, not everybody has a beautiful hourglass figure! Having somebody who is a little bottom-heavy is comforting.
While Tinker Bell does have a super-skinny waist, she is the only Disney female I have seen whose lower body is not exactly proportionate to her upper body.
When I realized this, it made me feel so much better...