I am regular/medium build (5 ft 4 and 145lbs) and I have bigger hips (42-43inch). I got a size 12 and they were too loose in the waist and too tight in the legs/hips. They fit fine in the legs while I stood (not too skinny, not too loose) but when I sat down there wasn't enough space for my booty and hips. I can't remember if they had size 14 available when I ordered, but when I figured out they weren't the right fit, the size 14 was not available.
I think in order to be satisfied with the fit, I would have had to get a size 14 and then have the waist taken in (alot!). But I wonder if the legs would then be too loose for me. Or I would have to take the waist in on the size 12 that I have. Overall, I feel a bit disappointed because I was SOO excited to find "menswear" that fits me. Unfortunately, this issue (loose in the waist, tight in the hips) is the same problem I always have with menswear pants.
Besides that, it was my first time wearing a suit to a wedding and I felt good. Get the sizing right, and I think these are a great option. Just maybe not the best option if you have a bigger butt/hips like me.