Hi Delicate_Dove...I'm normally a 12E and have gone up to a 14F (so far!). There aren't any bras in these sizes at Target or Kmart. I'd suggest going to Myers and having one professionally fitted (you don't have to buy it) and then possibly looking online or waiting til Myer have a sale to get the size you need. When I got fitted recently, the lady checked to see if there would be enough room for when my milk comes in (by getting me to put my hand inside the cup) so I know I still have some room to move in the ones I've bought.

Triumph make good supportive maternity bras, but unfortunately like most of the girls have mentioned here, they are expensive. I spent $60-$70 on my bras.