A little while ago, I bought a magazine called "Vogue Collections numéro 9 - Spring-Summer 2010" to get all 110 pages of shoe pictures included in it. As I was going through the pictures, I found something interesting on page 302, which had photos of Roberto Cavalli's shoes.
Here is one of the shoes shown on that page. Take a good look at the sole...
and then compare it to this:
I made these shoes in July 2007. (For the English description published later, see here.) The basic structure of the sole is similar, although not quite the same.