Princess Maria-Olympia of Greece and Denmark (born 25 July 1996) is an American fashion model, socialite and member of the now defunct Greek royal family, as the monarchy was abolished in 1973. She is the oldest child and only daughter of Pavlos, Crown Prince of Greece and his wife, Marie-Chantal Miller. Her paternal grandparents are Constantine II of Greece and Anne-Marie of Denmark, who were the last King and Queen of the Hellenes, while her maternal grandfather is duty free entrepreneur Robert Warren Miller.