Someone else at my library put up this display. The idea is cute - books with shoes on the cover or in the title.These sort of themes help people stumble on back list titles they may have missed. It can be tricky to fill in if you don't have ideas when you set it up. There are clearly tons of ways you could change this to suit your library's collection.
Add non-fiction if you need to and grab some history of fashion or fashion books. I would even put books from health about podiatry in it!