Ah, the famous black suit.
I have one black suit with two pairs of pants, purchased from Travel Smith for my last italian trip (zipper pockets, a wool poly mix that is washable) and rare occasion to wear it now, though I still do once in a while - since it fits again after weight loss.
So, one vote for black suits if, er, suitable for the employment place.
I had a friend who got a primo job at a university, in the planning department. I was visiting and staying at her place on one of my trips through San Francisco, and when she showed me through her apartment, the door of one of her armoires was open. Egads. A whole row of what looked like gorgeous suits. I had a moment of suit envy. She later changed jobs, got rid of most of the suits. Schniff. But she got rid of them to one of those places that provide suits for people of low money who are seeking employment. This may not be relevant to CLady - re what people tend to wear where you are. San Francisco, for the duration of time I've ever been there, has one part of the culture that is fairly dressed up, even in today's more casual california. (I should put this in her job thread.)