I was a little surprised to find that the fabric was different than the leggings, shorts, low back tank top, etc. Maybe the knit gauge is a bit larger? It doesn't seem as sheer, either, which I like. Anyway, it's just as comfy and soft and lovely. I ordered the raisin colour and it's absolutely gorgeous.
As a small chested person, there is a bit of extra fabric at the armpit area - probably to accommodate normal sized chests. Not enough to bother me, but it was a little jarring when I first tried it on.
I'm 23 weeks pregnant (at 5'5" and normally 135 lbs), and this overall fits great, with plenty more room to stretch as my baby bump grows even bigger.