I'm not very original: I bought my two red bikinis in Decathlon (French sportswear & articles store), because I needed something to go skin-diving, and I absolutely can't stand the feeling of a wet bathsuit against my belly. ~shudders~ I thought it wasn't such a bad deal: since it's made for a little more than 'just' sunbathing on the beach, at least the huge boobs could fit in it. But I'm not very self-conscious about that particular matter, I admit (I'm way more self-conscious about, uhh, being shaved properly down there.
) Anyway, maybe you can find nice bathsuits as well near where you live? If it's like here, they're not too much on the fancy side, but they're not ugly/too plain either, and offer enough support as well.