According to Forbes’s 2017 billionaires list, Alexandra Andresen, a 20-year-old woman from Norway is the world's youngest billionaire with a net worth of $1.2 billion. Andresen attained the fortune when her father, industrialist Johan Andresen, transferred 42% of family-owned investment company Ferd to her. Her 21-year-old sister Katharina, who received the same amount, is the second youngest billionaire.