Princess Maria-Olympia of Greece Princess Maria-Olympia is a young and modern royal with a stylish Instagram account that's going to eat you up with jealousy. The 21-year-old clearly knows what flatters her figure, and she isn't afraid to show it. During Fashion Week, she's generally spotted at shows like Michael Kors, Valentino, and Dior. Image Source: Getty / Rindoff/Dufour