I am also a 32 b and i absolutely love the "knockout" bra. it starts at 32 c, but the cups run small so it fits perfectly. its a wireless push up bra and is more of a balconet style so its great for square neck tops. plus they are 2 for $49.50 right now so its basically like getting one for free since they are normally $48-$55.
or you can try the new "incredible push up" (make sure its a new one since those have adjusting straps). its not a wireless, but it has gel encased underwire that makes it really comfortable to wear. it doesn't make you look any bigger, but it does give good cleavage.
also there is the new "amazing" bra that just recently came out that doesn't have a wire, but it does have a flexible engineered support that some may mistake for a wire. it is more comfortable that one with a wire though, and again it doesn't give any added cups but gives great cleavage.
(the bra names are in quotes since they name the bras after descriptive words so you know what to ask for)