Bum Going Through A Surgerical Section

        

 Kim Kardashian's famous ass just got jacked by Liziane Gutierrez ... who paid top dollar to get it.

The Brazilian model dropped $25,000 to go under the knife last month in her home country and
pump up her booty. We're told she received injections of hyaluronic acid, which doesn't show up on X-rays ... critical to the booty community, apparently.