SPANX Founder Sara Blakely on Joining 'Shark Tank': 'I Was Flooded

ET got a behind-the-scenes sneak peek at Blakely's guest-starring role. 

Sara Blakely

How Spanx founder Sara Blakely makes and spends her $1.1 billion fortune

Spanx Creator Sara Blakely: 25 Things You Don't Know About Me

Spanx founder Sara Blakely learned an important lesson about failure from her dad — now she's passing it on to her 4 kids - Yahoo Sports

Sara Blakely's First EVER Shark Tank Deal, Shark Tank Firsts

Spanx founder Sara Blakely learned an important lesson about failure from her dad — now she's passing it on to her 4 kids

Wisconsin Inno - Update: The Kombucha Shop Lands Shark Tank Deal With Spanx Founder and Barbara Corcoran

How Spanx founder Sara Blakely makes and spends her $1.1 billion fortune

Spanx Founder Sara Blakely On Celebrating Failures

Sara Blakely's First EVER Shark Tank Deal, Shark Tank Firsts

Sara Blakely's Pantyhose Epiphany: The Birth of Spanx

Sara Blakely

Shark Tank's Mark Cuban and Sara Blakely: How to Get to $1 Million

Sara Blakely's First EVER Shark Tank Deal, Shark Tank Firsts

Spanx Founder Sara Blakely On Celebrating Failures