I went and bought mine from Farmers for $10, when I was 37-38 weeks. They are great...very comfy. I bought one size bigger but same cup size. the one I bought has several hook thingies and even tho I bought a size bigger (and I really need my original size), the bra fits me fine.
I also thought, hell even if it does not fit me ....its only $10.....But take all the above advice and look around. And shopping is sooo much fun!