World's 10 richest billionaires
10: Amancio Ortega ($18.3 billion). Ortega, 72, is a Spanish fashion entrepreneur. He is the founder, with his then-wife Rosalía Mera, and chairman of the Inditex Group. Ortega keeps a very low profile and there are few photographs of him. He refuses to wear a tie, likes to dress in blue jeans and has never been interviewed. Getty Images
