Susanne Klatten (Germany) $11.1 billon

47. Married, 3 children

BMW heiress holds MBA from IMD business school in Lausanne, Switzerland. She sits on supervisory board of chemical manufacturer Altana, of which she now controls over 95%; is seeking to acquire remaining shares and delist the firm. Once considered quite circumspect, the married mom publicly admitted she had an affair with a man she'd met at a hotel bar and later tried to blackmail her for millions. She turned in the blackmailer, who is now serving a six-year prison term.

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