Have you ever wondered who the world's youngest billionaire is?
You'll never believe how old (or young) she is.
Alexandra Andresen is the world's youngest billionaire and she has a net worth of $1.2 billion.
How, you might ask?
She inherited a stake in her family's investment company Ferd Holding.
The Norwegian heiress has chosen to stay away from the family business, so how does she spend her time?
She's an award-winning horse racer and is currently training for the 2020 Olympic Games in Tokyo.
Her sister, Katharina, is the second youngest billionaire - at 21, she's also worth $1.2 billion.