I think going up to C's would look natural on you still and real nice. However, if you want to go big just for the fun of it, why not try for E's or so? Your small frame with such large knockers would be real fun to play with. ^_^
I do not understand. I just do not understand. Why oh why do they want to change perfection. That is an absolutely perfect pair of tits right there. They are freaking flawless! FLAWLESS!!! I'm not understanding this at all. :-