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U.S. first lady Michelle Obama
Credit: Reuters
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Argentina's President Cristina Fernandez
Credit: Reuters
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IBM Chairwoman and CEO Virginia 'Ginni' Rometty
Credit: Reuters
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Susan Wojcicki, senior vice president of Ads and Commerce for Google
Credit: Reuters
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Marissa Mayer, Chief Executive Officer of Yahoo, Co-Chair of the World Economic
Credit: Reuters
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Businesswoman Oprah Winfrey
Credit: Reuters
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PepsiCo Chairman and Chief Executive Officer Indra Nooyi
Credit: Reuters
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Facebook Chief Operating Officer Sheryl Sandberg
Credit: Reuters
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Germany's Chancellor Angela Merkel
Credit: Reuters
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Melinda Gates, wife of Microsoft Corp co-founder Bill Gates
Credit: Reuters
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General Motors Co's new chief executive Mary Barra
Credit: Reuters