
Mark Zuckerberg . Facebook
Age: 23 / Fortune: self made / Education: Harvard University, Drop Out
Net Worth: $1.5 bil
Tech’s newest golden boy founded addictive social networking site Facebook in February 2004 from his Harvard dorm room. Left school for Silicon Valley later that year; scored initial $500,000 investment from PayPal cofounder Peter Thiel. Today Facebook boasts 66 million active users. Estimated annual sales: $150 million. Microsoft bought 1.6% stake for $240 million last October; deal led many to suggest the company is worth $15 billion.

Albert von Thurn und Taxis
Age: 24 / Fortune: inherited / Source: diversified
Net Worth: $2.3 bil
The youngest billionaire in the world for years, slips to third place. Prince Albert von Thurn und Taxis officially inherited fortune on his 18th birthday in June 2001. He hardly needs to work. Assets include real estate, art and a tech company. His 30,000 hectares of woodland in Germany is considered one of the largest forest holdings in Europe. Lives in a family castle.

Hind Hariri
Age: 24 / Fortune: inherited / Source: inheritance
Net Worth: $1.1 bil
Youngest child of slain Lebanese Prime Minister Rafik Hariri, inherited stake in family’s construction, banking and media holdings. Sticks close by mother Nazek in Paris, where she attracted attention during recent fashion shows. Confessed to fashion rag Women’s Wear Daily: “Couture is for when I am representing my family. I’m more into pret-a-porter.”

Yang Huiyan
Age: 26 / Fortune: inherited / Source: real estate
Net Worth: $7.4 bil
Daddy’s girl received 58% stake in real estate developer Country Garden from its main founder, her father, Yeung Kwok Keung. She’s now China’s richest woman. Not much else known about her other than the fact she is an Ohio State grad and her wedding video is posted on YouTube.
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