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. 

SPANX Founder Sara Blakely on Joining 'Shark Tank': 'I Was Flooded With Emotion' (Exclusive)

Sales of kombucha kits spike after successful 'Shark Tank' pitch

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

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

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

Meet Sara Blakely, Shark Tank US

Sara Blakely

Masters of Scale: How to find your big idea, with Sara Blakely

Sara Blakely of Spanx: Smooth Operator - WSJ

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

Sara Blakely's Pantyhose Epiphany: The Birth of Spanx

Watch: Spanx Employees React to Gift of $10,000, Plane Tickets

Sara Blakely's Pantyhose Epiphany: The Birth of Spanx

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