If he didn't make that clear earlier on, it's no fault of yours that you don't appear to fit their requirements.
Be straightforward, even laugh about it, and say, "Hey, we just noticed your updated profile and it looks like we may not be so compatible after all. I wear a 34B bra. So what do we do now?" I'd include a smiley face laughing after that, then wait and see how they reply. You probably wouldn't want to call them, unless you feel real comfy doing so. An e-mail doesn't put them on the spot like a phone call does. They can think it over before responding.
Don't let this get you down. It's one of those bumps in the swinging road. But this could turn out surprisingly well. He may decide a smaller breasted woman has a lot to offer.
Let us know how things turn out.
LM
