Alexandra and her older sister Katharina each got a 42% slice of the company, making them both billionaires, even though Johan still controls the company. Since she’s not busy running a massive Norwegian investment firm, Alexandra has had time to graduate from high school and become one of the top horseback riders in Norway. The transfer of company stock reportedly happened back in 2007, but only became public knowledge this year, although given the immense wealth her family has amassed over several generations, it’s unlikely anyone was under the impression she was destitute. That speaks to the high premium on privacy held by the Andresen family, which also means details about Alexandra’s personal life are pretty much limited to what she chooses to make public via her Instagram and other social media accounts. So, a lot of stuff about horses: https://www.instagram.com/p/BF8ZuUHp4HA/?taken-by=alexandraandresen&hl=en Alexandra’s older sister Katharina is also a billionaire, obviously, but since she’s a ripe 20 years old, she doesn’t have any claim to the title of “World’s Youngest Billionaire.” She is, however, the World’s Second-Youngest Billionaire, and is reportedly studying social science at Amsterdam University College. Here’s a quick list of other extremely young billionaires and multi-billionaires: Katharina Andresen – 20 years old: $1.2 billion (Source: Same as her sister above) Gustav Magnar Witzoe – 22 years old: $1.1 billion (Inherited 47% of SalMar, one of the largest producers of farm-raised salmon in the world) Evan Spiegel – 25 years old: $2.1 billion (Snapchat) Ludwig Theodor Braun – 26 years old: $1.2 billion (Inherited 9.69% of a major medical products company started by his family in 1839)