Spanx founder Sara Blakely attends the Massachusetts Conference for News Photo - Getty Images

Spanx founder Sara Blakely attends the Massachusetts Conference for Women at Boston Convention & Exhibition Center on December 8, 2016 in Boston, Massachusetts. Get premium, high resolution news photos at Getty Images

Spanx founder Sara Blakely and Gayle King attend the Massachusetts

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1,101 Sarah Blakely Photos & High Res Pictures - Getty Images

1,101 Sarah Blakely Photos & High Res Pictures - Getty Images

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Spanx founder Sara Blakely speaks onstage during the Massachusetts

67 Woman Spanx Stock Photos, High-Res Pictures, and Images - Getty

1,101 Sarah Blakely Photos & High Res Pictures - Getty Images

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