Online is the way to go, definitely. I've found a site here that carries lots of sizes, both in regular, maternity, and nursing bras. They tell you how to measure yourself properly too, so you can be sure you'll get something that will fit. The site I use has pretty good prices too, and free shipping for me, but it's a North American site, so I don't know what the shipping costs would be to AUS. It might be worth a look anyways. I'm a 34H normally (is that a 10H in AUS?), so nursing bras are a REAL challenge for me. Google Breakout Bras. All the best!