Who is Sara Blakely? Get to know billionaire Spanx founder as she joins investors on Shark Tank

This week's Shark Tank sees Sara Blakely, the billionaire founder of Spanx, join the show as a guest investor. But did you know her amazing backstory?

BELIEVE in Your IDEA!, Sara Blakely

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

How Influencer Marketing Helped Build a $400 Million Brand: The SPANX Story, BANKNOTES

Sara Blakely: My inspiration was my own butt

What Is Sara Blakely's Net Worth?

MasterClass Announces SPANX® Founder and Self-Made Billionaire Sara Blakely To Teach Entrepreneurship

Sara Blakely

Shark Tank– Season 9 powered by Garnier Men premiering on Colors Infinity

How Influencer Marketing Helped Build a $400 Million Brand: The SPANX Story, BANKNOTES