# Inside Tatiana Santo Domingo's Life as Monaco's Beer Heiress in the Royal Family > Tatiana Santo Domingo, an heiress to Colombia's Bavaria brewing fortune, married Andrea Casiraghi in 2013 and has since built a quiet life between Monaco's royal family and her own ethical fashion label, Muzungu Sisters. - Source: Monaco Day - Canonical URL: https://monacoday.com/en/article/tatiana-santo-domingo-monaco-royal-beer-heiress - Author: Monaco Day Staff - Section: Society - Published: 2026-08-13T11:00:00.000Z - Updated: 2026-08-13T11:00:00.000Z - Tags: Tatiana Santo Domingo, Andrea Casiraghi, Monaco Royal Family - French edition: https://monacoday.com/article/tatiana-santo-domingo-monaco-royal-beer-heiress --- Tatiana Santo Domingo's fortune traces back to her grandfather Julio Mario Santo Domingo, who built a Colombian business empire centred on the Bavaria brewery and left an estimated 8.5 billion dollar fortune when he died in 2011. Forbes reported that Tatiana inherited one sixth of that estate, and by 2016 her own net worth was estimated at 2.4 billion dollars. She now holds roughly a 5 percent stake in the family's holding company, which carries interests in Anheuser-Busch InBev, Keurig Dr Pepper, Kraft Heinz, several Colombian companies and the Château Pétrus vineyard. The family converted its original Bavaria holdings into shares of SABMiller in 2005, then rolled those into Anheuser-Busch InBev following the two brewers' 2016 merger, a deal valued at more than 100 billion dollars. That transformation, from a national Colombian brewery into a stake in the world's largest beer company, underpins the wealth Tatiana now shares with her husband, Andrea Casiraghi, the eldest son of Princess Caroline of Monaco and grandson of the actress Grace Kelly. The couple married in a civil ceremony in Monaco in August 2013, followed by a religious ceremony in Gstaad, Switzerland the following February, and now have three children together, Alexandre, known as Sasha, India and Maximilian. Rather than stepping fully into public royal duties, Tatiana has kept a relatively private profile, splitting her time between the family's ties to Monaco and a home base in Saanen, Switzerland. Alongside her family wealth, Tatiana has built a business of her own. In 2011 she co-founded Muzungu Sisters with Dana Alikhani, an ethical fashion label that works with more than 40 artisan communities around the world to produce handmade, embroidered clothing and accessories. The label gives her a professional identity distinct from both the Santo Domingo fortune and the Casiraghi name, a quieter counterpart to a family history built on beer, banking and one of Europe's most storied royal houses. --- Originally published by Monaco Day. Free to cite with attribution and a link to https://monacoday.com/en/article/tatiana-santo-domingo-monaco-royal-beer-heiress.