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. 

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

Spanx founder Sara Blakely gives staff $10,000, plane tickets - ABC News

Sara Blakely

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

Madison kombucha kit maker to give 'Shark Tank' pitch Sunday

Meet Sara Blakely, Shark Tank US

Spanx CEO Sara Blakely offers advice to redefine failure

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

Spanx founder Sara Blakely gives staff $10,000, plane tickets - ABC News