Billabong Vixen Halter Bikini- The Billabong Vixen Halter Bikini brings out your inner pirate. Whether you’re in a swordfight or just getting tan by the pool, this bikini has you covered. The triangle halter top has removable cups and a center ring that displays 3 good luck charms: a skull, a star, and a “B.” The lowrider bottoms are lined and feature fixed hanky ties at the sides. You’ll be as much of a vixen as Kiera Knightley in this suit.