BobbyBooshay
Arnold Jackson
Move over, Oprah! Nigerian billionaire unseats TV queen as the richest black woman in the world with $7.3b oil fortune
- Mother-of-four, Folorunsho Alakija, 62, started her career as a secretary in a bank then studied fashion and launched a label but her big break was oil
- In 1993, her company, Famfa Oil, was awarded an oil prospecting license, which later became OML 127, one of Nigeria's most prolific oil blocks
- The company owns a 60 per cent stake in the block, valued at around $7.3 billion, Ventures Africa reports
- According to Forbes, Oprah Winfrey is worth $2.9 bin