This chain has stores around the United States, but when you’re on St. Barts why not visit the pink-tiled flagship? Calypso epitomizes the breezy chic of high-end island destinations in its luxe, name-brand fashions—beachwear, caftans, sandals, oversize sun hats and raffia bags. Pick up a plush towel and some citrusy candles to bring your vacation back home.