Just wanted to share, I too have the same problem, I'm only an AA/A cup and have always settled for a non padded triangle bikini because I think padded bikinis look kinda fake. I bought this brand of bikini- voda swim? off revolve cus the models look so good and I think this might be it! It's quite embarrasing to post pics here but I guess, just to show the effect, so here goes:
The padding does make the cups kinda stiff and hard but I think it looks OK shrug* at least now I 'look' like I have a lil somethin.
Maybe you all can check it out and see if it works for you, I'm 5"1, 100lbs, wearing size S