Not an official D&D supplement, but something that the people on the Order of the Stick webcomic forums cooked up- I can link you if you like.

And yeah- footbinding is one of those 'my brain refuses to fully contemplate the horror of having to endure such a thing' squicks for me- respect to different cultures' mores and standards aside. I like to think that in the Avatar world, it doesn't happen, or at least is not prevalent now.

Sometimes, I think half the reason I get into fandoms is because I see opportunity to draw fancified versions of their base-model clothes^^ Haven't done much of it yet for Avatar, but not for lack of wanting.