Best replacement for a 32A sized bra?

Whenever I go shopping here, there are times when the bra designs I want aren't available in my size, which is 32A. Brands like Triumph stopped selling 32A in Asia, I was told. If ever this happens, what bra size is a good replacement for it, at least the size that doesn't look awkward when worn? Should I get a 32B or a 34A?