Well, I love men in formal attire. I find that usually sexy. I also love dressing up and well, nice undies underneath, certainly! However, some of the summer more revealing evening dresses are not compatible with some of the sexiest undies in terms that you often cannot wear a bra (or else it shows) or it has to be one with invisible so to speak parts.
I love lingerie though and I think it's important to make an effort to keep the passion alive with little things like that, especially for couples like us who had a baby recently. It's easy for couples sometimes to get into a rut and become too tired to be intimate and make themselves look and feel special. I'm personally all for spicing things up!