You may not have heard of Dov Charney, but his empire is taking over the world. American Apparel, the company he founded in 1997, now employs more than 6 700 people, and has 187 stores in 15 countries. He has just been sued by an employee called Jeneleen Floyd who alleges that, in the course of a telling-off, he ordered her to pretend to masturbate in front of him.