How to make gladiator style shoes professional looking?

I have an interview today at a shoe store and I was thinking about wearing some gladiator style shoes. The shoes are flat, brown fake crock, patent and not fringed or studded, they do have thick straps and have an open toe. What could I pair with them that would look suitable for an interview and show off the shoes. Keep in mind I'm in my 30's nothing to trendy please.