I am a 16J so I will tell you what I have tried and do / don't like.

The Berlie MAt Bra is soooo comfy, goes up to an F - I was wearing an 18F at the time because I didn't want to shop online, I wish it still fit.

The Lovable Maternity Bras also go up to an F I think (maybe only an E), pretty comfy but I didn't really like the bra itself.

Fayreform Evolve... goes up to J, possibly K cup. Nice, supportive, but a little irritating with the detail on the fabric (though maybe thats just me) and the drop cups are the one that have the extra bit across the top of the cup, if you know what i mean. I think it's called an A-frame, but i could be completely.

Ummmm the one im wearing i cannot for the life of me remember what it is, but it is definitely the best one I own. It also has silver in it which has healing properties and I haven't had a blocked duct since I have been wearing this bra. Okay, it sounds odd, and it could be coincidence but I was getting them almost once a week.

Ill have a google and get back to you... or i could strip, Okay, it's a Sophie by ROYCE.

I buy all my bras online now (blest bras), but as you are not as big as me you still shoould be able to get some in stores - for instance the Lovable and Berlie bras i got from Myer.

Good luck.