Charlotte and her two brothers, Andrea and Pierre, were born in the Mediterranean Principality of Monaco, ruled by their maternal grandfather, Prince Rainier III. When she was four years old, her father was killed in a boating accident. After his death, Princess Caroline moved the family to the Midi village of Saint-Rémy-de-Provence in France, with the intention of minimising their exposure to the press.
In January 1999, Charlotte gained a stepfather and two stepbrothers, (Prince Ernst of Hanover and Prince Christian of Hanover), when her mother married Ernst August, Prince of Hanover. Six months later, Casiraghi's half-sister, Princess Alexandra of Hanover, was born at a clinic in Voecklabruck, Austria. The family then moved to the Parisian suburb of Fontainebleau.
In January 1999, Charlotte gained a stepfather and two stepbrothers, (Prince Ernst of Hanover and Prince Christian of Hanover), when her mother married Ernst August, Prince of Hanover. Six months later, Casiraghi's half-sister, Princess Alexandra of Hanover, was born at a clinic in Voecklabruck, Austria. The family then moved to the Parisian suburb of Fontainebleau.