PogiJones,
As much as I love boobs, they are just boobs. I think you should tell your wife that nobody actually cares about boob size all that much.
Yep, I'm saying it, I don't think anyone really cares.
If I check a woman out, I don't think ... "oh her boobs are too small let's laugh at her because she looks like a boy." Nobody cares, or even thinks that, you might need to be the tiniest A cup, an extreme, extreme, where one might may a decent argument that this extreme variation warrants some sort of expansion, even then I would talk to that person about the superficiality of it. I wouldn't say your wife is there by the way.
Anyway I have never heard a guy or woman in my life that has really ever cared all that much about the size of someones else's boobs. You might OP, but are you really going to be that much happier? Society most definitely doesn't care so what I don't see is why your wife does, she already has you.