Spanx founder Sara Blakely speaks onstage during the Massachusetts News Photo - Getty Images

Spanx founder Sara Blakely speaks onstage during 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

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

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

Photos: Spanx founder Sara Blakely through the years – KIRO 7 News Seattle

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

Mika Brzezinski and founder of Spanx Sara Blakely speak onstage at News Photo - Getty Images

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

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1,101 Sara Blakeley Photos & High Res Pictures - Getty Images

1,101 Sara Blakeley Photos & High Res Pictures - Getty Images

Spanx founder Sara Blakely speaks onstage during the Massachusetts News Photo - Getty Images