Sophia Amoruso

Company: Nasty Gal and Girlboss Media

Age: 34

Net worth: $280 million (£216.8 million) (2016)

Sophia Amoruso had her fair share of knockbacks when building her empire but has since managed to pull through and build an inspiring brand for millennials.

In 2015, she stepped down as Nasty Gal’s CEO and watched the company file for bankruptcy, but this was just a setback and went on to develop her new venture, Girlboss, a site that’s dedicated to advising and empowering women on wellness, beauty, careers and more.