I would try a really thin satin or a thin tightly woven nit. I know the satin can be very hard to find, but they make it where its almost see through. I don't think I have ever heard of a thin nit but if it exsists it would be something you could use. Sorry this isn't very helpful but its just ideas.
It is not just a horse,
It is the one thing that keeps me from being just a girl