This year Forbes welcomes a record 268 first-time faces to our annual listing of the World's Billionaires, including 42 women, the most ever. They minted their fortunes from social media in Silicon Valley, real estate in China, fashion in Nigeria and every combination in between. The largest contingent – 50 – hails from the United States, followed by China (37), Germany (26) and Brazil (23). In aggregate they are worth some $510 billion – roughly the GDP of Norway – another record. Continue »