Unfortunately, that's not to say that all trouser suit-and-shoe pairings are equal. The below list is not exhaustive, and I would always urge you to do you (no matter what an article, editor or friend says!) but these are some reliable combinations that I've seen stand up over the years. Trends come and go, but honestly, a well-cut trouser suit should be forever—it's just how you wear it that might change in time.
So right now in the "what shoes to wear with a trouser suit?" conversation in our office, we've landed on the following. From wide-leg linen styles with chunky flat sandals (yep, you probably own both already) through to the return of the cigarette leg and the slingback heels that make them their sassiest.