Kate is half-Seychelloise, and holds dual British and Seychelles citizenship.
Born in London, she is the daughter of top model Debbie Grieve, whose legs were famously the first ever to adorn a cover of Vogue (Paris Vogue 1966), and Bernard Loustau-Lalanne, former Seychelles Ambassador to the UK and US.
Kate attended Heathfield School in Ascot, England, alongside Sienna Miller.