Spanx founder Sara Blakely reveals her secret for coming up with

Sara Blakely went from selling fax machines

Spanx Founder Sara Blakely Says This Business Idea Validation Step

Sara Blakely

Spanx Founder Sara Blakely Has 99 Pages of Business Ideas

What the Spanx billionaire packs for a flight

Spanx founder rewards employees with first-class plane tickets and

Sara Blakely

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

Rent the Runway

Spanx founder Sara Blakely thanks the Kardashians for helping

Sara Blakely