Billionaire heiress Tatiana Santo Domingo is now the wealthiest citizen of Monaco, where one-third of the country's population has assets over $1 million

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Billionaire heiress Tatiana Santo Domingo is now the wealthiest citizen of Monaco, where one-third of the country's population has assets over $1 million

Tatiana Santo Domingo

Pascal Le Segretain/Getty Images

Tatiana Santo Domingo attends the Giambattista Valli Haute Couture Spring Summer 2019 show as part of Paris Fashion Week on January 21, 2019 in Paris, France.

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Monaco is known across the globe 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 wealth per capita of $2.1 million. A zero income tax policy in the country attracts the super-rich to its shores and an estimated 32% of Monaco residents are millionaires.

Read more: 15 astounding facts about Monaco, the tiny French Riviera city-state where 32% of the population is made up of millionaires

One member of the Monegasque royal family who is well known within high society and the fashion elite is Tatiana Santo Domingo.

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The granddaughter of a wealthy beer brewing tycoon, the American-born heiress has a net worth of $2 billion. Forbes confirmed to Business Insider 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 even higher net worths.)

Here's everything we know about the uber-wealthy socialite and member of the Monegasque royal family.

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Tatiana Santo Domingo's net worth currently sits at $2 billion, making her the richest person with citizenship from Monaco.

Tatiana Santo Domingo's net worth currently sits at $2 billion, making her the richest person with citizenship from Monaco.

Source: Forbes

Even as a member of one of the world's elite royal families, the heiress leads a relatively private life.

Even as a member of one of the world's elite royal families, the heiress leads a relatively private life.
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Tatiana Santo Domingo, otherwise known by her married name Tatiana Casiraghi, was born in New York City on November 24, 1983.

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, France, and London throughout her life.

Source: Vanity Fair

Her grandfather, Julio Mario Santo Domingo, was named the second-richest man in Colombia by Forbes in 2011, before his death that same year.

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% stake in SABMiller, making the entire Santo Domingo family extremely wealthy.

Source: Forbes

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

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

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

Source: The New York Times, Hello Magazine

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

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. The price to attend is as much as $130,000 annually for tuition and boarding. The school is also the oldest in Switzerland. One of the campus' buildings, the Château du Rosey, was built in the 14th century, while the school was founded in 1880.

Read more: An exclusive look inside the world's most expensive school, where tuition fees are more than £87,000 a year

Source: Vanity Fair

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Santo Domingo then received a Bachelor of Fine Arts degree from The American University of London in 2005, prior to the university losing its accredited status in 2007.

Santo Domingo then received a Bachelor of Fine Arts degree from The American University of London in 2005, prior to the university losing its accredited status in 2007.

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

Source: Vanity Fair, Muzungu Sisters, IACBE

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

Tatiana Santo Domingo is perhaps best known for her place in the Monegasque 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.

Source: Harper's Bazaar

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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.

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.

Source: Town and Country, National Constitution Center

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

The couple reportedly 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.

Source: Vogue

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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."

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."

Source: W Magazine

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

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

Source: Constitution of the Principality

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

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

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

Source: W Magazine

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

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 multiple fashion shows and industry events.

Source: Vogue

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

Here the socialite is pictured at the Giambattista Valli Haute Couture Spring Summer 2017 show with Diane Von Furstenberg and her granddaughter Talita Von Furstenberg.

Source: Getty Images

Tatiana Santo Domingo has worked in the fashion industry for years.

Tatiana Santo Domingo has worked in the fashion industry for years.

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.

Source: Muzungu Sisters

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

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.

Source: W Magazine

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

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, Colombia, and more.

Dresses, tops, and skirts on the site hover around $150 to $300, while the brand's iconic basket bags go for around $350.

Source: Muzungu Sisters

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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.

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.

Source: Muzungu Sisters

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

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

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

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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.

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 favorite footwear, the free-spirited billionaire said she prefers to be barefoot whenever possible.

Source: W Magazine

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

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