Meet Monaco’s richest citizen – whose husband is Grace Kelly’s grandson and fourth-in-line to the throne

Tatiana Santo Domingo is married to Andrea Casiraghi, nephew of Monaco’s reigning monarch, Prince Albert, and the grandson of American actress-turned-royal Grace Kelly
Monaco is known for its wealthy residents, luxurious yacht shows, and for being the home of Europe’s longest-ruling royal family.
Although Monaco is one of the smallest countries in the world, it is also one of the richest per capita. According to Fox Business, Monaco has a per capita wealth of US$2.1 million. A zero income tax policy in the country attracts the super-rich to its shores and an estimated 32 per cent of Monaco residents are millionaires.
One member of the Monégasque royal family who is well known within high society and the fashion elite is Tatiana Santo Domingo.
The granddaughter of a wealthy beer-brewing tycoon, the American-born heiress has a net worth of US$2 billion. Forbes confirmed that, as of October 7, 2019, Santo Domingo is the richest citizen of Monaco. (There are other residents of Monaco, who are not citizens, with an even higher net worth.)
As for her favourite footwear, the free-spirited billionaire said she prefers to be barefoot whenever possible
Here’s everything we know about the uber-wealthy socialite
Even as a member of one of the world’s elite royal families, the heiress leads a relatively private life.
Tatiana Santo Domingo, otherwise known by her married name Tatiana Casiraghi, was born in New York City on November 24, 1983.
She was raised in Geneva, Switzerland, but has lived in Paris, Rio de Janeiro, elsewhere in France and London throughout her life.
Her grandfather, Julio Mario Santo Domingo, was named the second-richest man in Colombia by Forbes in 2011, before his death that same year.