Based on her surname, you might assume that Tatiana Casiraghi is the daughter of Italian football legend Pierluigi Casiraghi. If she were, she'd probably be quite rich, but not as rich as she is. Her parentage is far grander. She's the granddaughter of Santa Domingo Group founder Julio Mario Domingo, who left her a sixth of his fortune in his will. As if that weren't enough, she married Andrea Casiraghi - the daughter of the Princess of Hanover. She didn't just marry into money; she married into royalty!
Her current estimated worth $1.6bn and rising. It gets added to all the time because her grandfather's gift to her included shares in the Miller beer company. That useful nest-egg has allowed her to set up her own craft website 'Muzungu Sisters', which focuses on creating unique handmade goods sourced from ethical materials.