What makes you so sure? The only thing that is obvious is those are stilettos, which has been prevalent in Catwoman's imagery for quite some time. I see nothing practical about them.They're these makeshift metallic looking things sticking out of a boot-like wear. It's so obvious they're using it for logistics and it will be removed by CGI once in the movie.
With that said, nothing would make me more furious if he decided to keep these in, but not the cowl.