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Inventor of Spanx is World's Youngest Female Self-Made Billionaire

A product promising to help people look thin has given its inventor a big fat wallet. Thanks to her ingenious idea to combine insecurity, enormous underpants, and elastic sausage casings, Sara Blakely, the forty-one-year-old inventor of Spanx, is now the world's youngest female self-made billionaire. » 3/08/12 11:40am 3/08/12 11:40am