Meet Alexandra Andresen, the youngest woman to have featured on Forbes's ranking of the world's wealthiest people. Ranked at #1,475 along with her sister, her net worth has been valued at a whopping $1.2 billion! And she's just 19 years old! Alexandra inherited her fortune from her father, Johan F. Andresen who made his fortune in the tobacco industry. It's the first time that two teenagers - including her sister Katharina (20) - have been featured on the coveted list of the world's richest people.

It was in 2007 that the girls' father transferred 80% of his stake to his daughters in Fred Holdings, the biggest company in Norway. Considering this, the girls made their way into the list only when they came of age and started filing tax returns which made their fortunes open to public consideration.

Alexandra currently lives in Germany, and according to Daily Mail, she is a well-known rider of her horse 'Belamour' which has won her many competitions at the European Junior Riders Championships.