And while I’ll always be enamoured by Carolyn’s headbands and classic taste, as the weather gets warmer I find myself turning to her mother-in-law, Jackie Kennedy, for style inspiration. Known for her pillbox hats and skirt suits, Jackie Kennedy has long been an icon for timeless elegance, but it’s her summer holiday style that offers the perfect blueprint for laidback polish. Jackie Kennedy with Lee Radziwill in Amalfi Harbour. A slick-back bun is one way, a headband is another, but Jackie Kennedy’s headscarf is the easiest and chicest of them all when on holiday. With a headscarf, wet hair from swimming can be easily covered up, and a hat can be worn on top to protect from the sun.