Charlotte Casiraghi is the daughter of Princess Caroline of Monaco. The heiress is clever, trendy and fashion. Discover now her healthy diet and beauty tips. Love is in the air! Grace Kelly's granddaughter Charlotte Casiraghi sparks up a relationship with French film producer, just months after split. Meet Grace Kelly's granddaughter, Karl Lagerfeld's muse and Stella McCartney's BFF. Here are 10 fascinating things to know about Charlotte.