A tiered skirt echoes the gentle waves. Ivory silk satin duchesse and organza gown with beaded waistband, $4,000, by Birnbaum & Bullock. “Alina” pink and clear plastic frame sunglasses, $300, by Oliver Peoples. White gold and diamond hoop earrings, $12,265, by Stardust Diamonds, 888-523-7787. White patent calfskin and gold chain handbag, $1,850, by Chanel, 800-550-005. White patent leather wedges, $490, by Fratelli Rossetti.