Bikini top by Billabong, Just add water, Triangle cups, Removable padding, Ring details, Adjustable straps, Hook closure. In 1973, Billabong founders Gordon and Rena Merchant started crafting and selling board shorts to surf shops on Australias Gold Coast. Thanks to the durable, triple-stitching technique they used, their designs became go-tos for local surfers, and the rest is history. Take a look at our edit of the brands surf, swim and beachwear its swimsuits and bikinis are always board-ready.