I have nothing published yet about neoprene swimsuits and bikini though this fabric has been conquering catwalks, and not only with beachwear. Tops, skirts, dresses and pants are being created from neoprene in latest seasons, but still the main purpose of waterproof fabric is hydroprotection. I offer you a selection of interesting models of neoprene swimsuit and bikini which I picked up for you.
Wikipedia explains us that the neoprene is "a family of synthetic rubbers that are produced by polymerization of chloroprene. Initially is a patented trademark of DuPont. Waterproof, elastic. Color is usually black, rarely - dark brown or gray". As we can see, Wiki is a little behind the fashion, and does not know what designers have painted this material in a variety of colors, and now it is not only used by professional athletes as hydroprotection (and, incidentally, not only by representatives of aquatic sports, but everywhere where people needs protection against moisture and dirt., e.g. climbing and paintball). Again, according to the encyclopedia "Neoprene is a soft, porous material." I think, once in your life you've probably seen and groped this "fabric", because this material is also used for creation of waterproof cases for electronic devices and even of different pieces of clothing for weight loss.