Does anyone commute in their regular clothing? I have a question for you.

I've recently started riding to work on a bike that has me fairly upright. I am using a wider saddle than on my road bike just for this purpose. I'm commuting in my work clothes instead of 'cycling' clothes/shorts. Unfortunately, my sit bones are KILLING me. I know the saddle is a pretty good fit as it's only the actual sit bones that hurt...but I've never ridden so much without padded bike shorts.

DH has gotten used to it, but I'm still really, really sore. Will it go away? Or am I just asking too much of my poor sit bones??