4. Bridgette Radebe – Net-worth> R1 billion
Bridgette Radebe, the older sister of the South African billionaire, Patrice Motsepe, was awarded International Business Person of the Year in 2008.
She holds top positions in a number of companies, but is mainly known for her position as founder and executive chairperson at Mmakau Mining Limited. She was last rated as having a net-worth of R1 billion.