Sara Blakely's shapewear brand, Spanx, made her one of the world's youngest self-made female billionaires. Sara Blakely attends the launch of Haute Contour by Spanx at Saks Fifth Avenue in 2009. Two years later, her body-shaping invention went into production and was named one of "Oprah's Favorite Things," making it a favorite of celebrities and everyday customers alike. In 2012, Blakely appeared on the cover of Forbes as the world's then-youngest self-made female billionaire at age 41. Today, at 52 years old, she ranks 22nd on Forbes' list of America's self-made women with a net worth of $1.1 billion.

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Persons: Sara Blakely's shapewear, Sara Blakely, Joe Kohen, Blakely Organizations: Spanx, Saks Fifth, Forbes