I wore this to my sister's wedding in late summer. It's lightweight with comfortable, quality fabric that looks totally classy. You could dress it up with accessories like I did, or wear it somewhere more casual too. And HOORAYYYY it has POCKETS!!
I lobe that this is not made of stretchy fabric. So much materntiy close is made of knits so it is nice to wear something in a woven fabric. The fabric is airy and super soft and the fit is flattering. I would say that your size probably won't get you through to the end of 3rd trimester if you get big. So if you plan on doing that, maybe size up.