By A Mystery Man Writer
ET got a behind-the-scenes sneak peek at Blakely's guest-starring role.
Sara Blakely: My inspiration was my own butt
Sara Blakely says this daily morning habit sets her up for success
Sara Blakely's Pantyhose Epiphany: The Birth of Spanx
Sara Blakely
My Time at the 10x Growth Conference 3 - Landmark Tax Group
SPANX Founder Sara Blakely on Joining 'Shark Tank': 'I Was Flooded With Emotion' (Exclusive)
Watch: Spanx Employees React to Gift of $10,000, Plane Tickets
How Influencer Marketing Helped Build a $400 Million Brand: The SPANX Story, BANKNOTES
Spanx names a new CEO
Sara Blakely's First EVER Shark Tank Deal, Shark Tank Firsts
Spanx founder: My dad encouraged me to fail
Guest 'Shark' and Spanx Founder Sara Blakely Says This Question Helped Her Become a Success
Spanx Founder Explains Why She Kept Her Idea Secret For A Year