EXCLUSIVE AT NET-A-PORTER. If in doubt, always add a simple black swimsuit when packing for your next vacation. Faithfull The Brand's 'Phoebe' version has a '90s-inspired square neckline and vertical ribbed stripes to flatter your silhouette. The wide straps offer plenty of support, while the high-cut sides elongate the legs. Wear it with everything from wrap skirts to denim cut-offs when you're strolling to and from the beach.