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 Sara Blakely Photos & High Res Pictures - Getty Images

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

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

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

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

media.gettyimages.com/id/1544116442/photo/sun-vall

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

Founder of Spanx, Sara Blakely poses for The Times Magazine on March News Photo - Getty Images

Sara Blakely, founder of Spanx Inc., speaks during a panel discussion News Photo - Getty Images

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

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

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

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

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

Sara Blakely: a woman with a great grasp of figures, Lingerie

Spanx founder Sara Blakely rewards employees with $10k and 1st-class flights

How Billionaire Spanx Founder Sara Blakely Achieved Success

Spanx Founder Sara Blakely On How She Named Her Company

Spanx founder Sara Blakely reveals her secret for coming up with

Spanx founder Sara Blakely speaks onstage during the Massachusetts