Hi there, the next size up is a 410cc, but a 380cc and unders will give you about a 32dd-e cup or prob bigger. I only had 340cc overs and now a 32f, i was measured a 32e, but now 9 months later they have gone up a cup size!! 340-380cc are quite suprisingly good sizes, especially if you are already a b cup!. check out my pics on so fem, i am janey22 and password is boobies i am guna update them soon though as there quite old now XX