I love small chests and I know that's backasswards but it's true. I guess too many of my ex's were well-endowed or something (usually girls that my friends would be like OMG! look at her chest) but smaller chests are sexier I think. Anyway, on that note small chests look wonderful in bikinis
and I think only small-chested girls can really get away with some of the sexier bikinis like the triangle tops because they've not really got to worry about falling out too much. I think you've got many more options because your chest is smaller.