This is the world’s richest royal: he is worth 80 times more than Queen Elizabeth

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.)

A peek at life of billionaire Prince Albert of Monaco

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.

As the owner of Bavaria, one of the largest breweries in South America, he later traded his ownership for a 15 per cent stake in SABMiller, making the entire Santo Domingo family extremely wealthy.

The brewing tycoon had a net worth of US$8.4 billion, owned homes in New York City and Paris, and a private island off the Caribbean coast of Colombia.

When he died in 2011, one-sixth of his enormous wealth was left to Tatiana.

An exclusive education

The American-born heiress attended Institut Le Rosey, an exclusive boarding school in Switzerland.

The elite boarding school is one of the most expensive schools in the world with an annual cost of US$130,000 for tuition and boarding. The school is also the oldest in Switzerland. One of the campus’ buildings, the Chateau du Rosey, was built in the 14th century, while the school was founded in 1880.

Santo Domingo then received a fine arts degree from The American University of London in 2005, before the university lost its accredited status in 2007.

She majored in visual communications, with a concentration in photography.

How does UFC champ Conor McGregor spend his millions?

A royal affair

Tatiana Santo Domingo is perhaps best known for her place in the Monégasque royal family.

She is married to Andrea Casiraghi, nephew of Monaco’s reigning monarch, Prince Albert, and the grandson of American actress-turned-royal Grace Kelly.

At the time of his marriage to Tatiana, Andrea Casiraghi was second in line to become the Prince of Monaco. He is now fourth in line.

In 2014, with the birth of Prince Albert II and Princess Charlene’s twins, Princess Gabriella and Prince Jacques, the line of succession changed, making Andrea Casiraghi fourth in line to the throne.

The couple began dating in 2006 before tying the knot in 2013. Their wedding was a small yet high society affair.

The bride wore a V-neck Missoni dress with three-quarter-length sleeves and flat silver sandals, while Santo Domingo’s bridesmaids wore designer dresses from Dolce & Gabbana and Valentino.

A few months before the royal couple married on August 31, 2013, Santo Domingo gave birth to her first son, Alexandre Andrea Stefano Casiraghi, nicknamed “Sacha”.

As Santo Domingo and Casiraghi were not married when their first son was born, he was not originally given a place in the Monégasque line of succession.

In accordance with Monaco’s rules about legitimacy and eligibility to the throne, legitimate heirs must be related by birth to the ruler, and their parents must be married. However, when the two wed in 2013, Sacha became fifth in line to the throne.

Casiraghi and Santo Domingo now have two more children – daughter India, aged 4, and son Maximilian Rainier, born in 2018.

Maximilian was named after Rainier III, the late Prince of Monaco and husband of Grace Kelly.

Fashion and philanthropy

Most of Tatiana Santo Domingo’s rare public appearances revolve around the fashion industry.

Italian fashion heiress Margherita Missoni is a member of Santo Domingo’s inner circle, and the two have been spotted together at many fashion shows and industry events.

Santo Domingo is a regular at Paris Fashion Week and has been photographed in the front row of shows for Chanel, Christian Dior and Valentino.

Santo Domingo has worked in the fashion industry for years.

The 15 richest women in America, ranked by Forbes

She previously held a position at the Aeffe fashion house in New York under creative director Giovanni Biancho. She also reportedly held a position at Vanity Fair.

The billionaire heiress-turned-royal also runs her own ethical fashion company, Muzungu Sisters, with Dana Alikhani, an advocate for human rights.

Alikhani has held positions at the United Nations High Commission for Refugees (UNHCR) and at the Human Rights Watch in New York. She’s also served as a Middle East political analyst for a global business risk consultancy in London.

Founded in 2011, Muzungu Sisters collects and resells sustainable and ethically sourced goods from 17 artisan communities across the world.

The brand’s website claims that purchases “stimulate local economies” in India, Morocco, Peru, South Africa and Colombia, among others.

Dresses, tops, and skirts on the site range from US$150 to US$300, while the brand’s iconic basket bags cost around US$350.

How the 0.1 per cent live

According to the heiress’ biography on the Muzungu Sisters website, Tatiana Santo Domingo lives in London with her husband, their three children, and the family’s two dogs.

Who are the world’s 13 richest technology billionaires?

When she’s not attending fashion industry events or spending time with family, Santo Domingo enjoys visiting her favourite haunts in New York, Paris and London.

In 2015, the heiress revealed to W Magazine that her favourite spots for going out on the town were Bar Pitti and Indochine in New York, Ferdi in Paris, and Maggie’s Club in London.

When asked about the three items every woman should have in her wardrobe, Santo Domingo said “a good pair of jeans, a pair of Charlotte Olympia heels, and a Muzungu Sisters shawl” were her necessities.

As for her favourite footwear, the free-spirited billionaire said she prefers to be barefoot whenever possible.

Though Tatiana Santo Domingo is unlikely to ever be Princess of Monaco, it is intriguing to know how this enormously wealthy member of the royal family lives – especially now that she is officially the wealthiest Monégasque citizen in the world.

Want more stories like this? Sign up here. Follow STYLE on Facebook, Instagram, YouTube and Twitter .