Vtg Y2K Bikini Set Pink Floral Skull Adjustable Triangle Top Tie-Side Bottoms This vintage Y2K bikini set in pink floral with a skull design features an adjustable triangle top and tie-side bottoms. Made from a mix of nylon and spandex, this two-piece bikini set is perfect for women in size S/M. The halter strap top and unique adjustable features make this bikini set both stylish and practical for a day at the beach or pool.