In 2000, no one would've expected that an industry like women's undergarments had room for breakthrough innovation, let alone one worth over a billion dollars. And despite people laughing in her face, Sara Blakely had dreams of building SPANX in to a $20 million company. 

In this week's episode, we reveal how this former door-to-door fax machine saleswoman eclipsed ever her own goals, building SPANX to a $1.2B+ brand.