Hi, as maternity is clothes is expensive here, I found that normal fit low cut pants works i.e. hipsters, hope it helps you also
I got several pairs of blue jeans because my pre-preg jeans were pinching really bad. I haven't bought any shirts yet but for the most part my stretchier shirts still fit and look like they'll fit for a while longer. A nice coat would probably be a good idea because any coat you own now probably won't fit when it gets cold enough to wear it.
I'm in Canada so I know cold weather lol.... I have a few pairs of jeans a black pair of pants a bunch of yoga pants and I have about 10 shirts and still wear some of my pre preg shirts.... I also bought a maternity coat and a couple sweaters.... Honestly I bought way too much tho so try not to go too crazy cause your only preg for 9 months