(Clockwise from left) Logo swimsuit in white and gray, $265, by Louis Vuitton. Saunders yellow bathing suit with blue-striped waistband, $60, by Diesel. Broome red and white swimsuit, $34.92, by aussieBum. Floral-print swim shorts, $34.50, by Gap. Blue vintage Adidas shorts available at Flying A, NYC. Vintage white "Guard" T-shirt available at Flying A, NYC. Warathah red and white surf shorts, $27.93, by aussieBum. Cream and brown GG nylon stretch swimsuit with gold buckle, $345, by Gucci. Browning lotion by Maui Babe.