Renzo Rosso net worth: Renzo Rosso is an Italian fashion entrepreneur who has a net worth of $3 billion. Know as a jeans guru, Renzo Rosso co-founded Italian design company Diesel 35 years ago, at the age of 23. He owns 100% of the company that has evolved from a jeans seller to a much broader lifestyle brand with revenues of $2 billion in 2012. In the last decade, Rosso through a holding company called Only The Brave, was snapping up major shares in small, upmarket fashion houses all across Europe. His stakes include Paris-based Maison Martin Margiela, Amsterdam's Viktor & Rolf, and Milanese label Marni. Apart from expanding his clothing business, Rosso also invests in tech start-ups including Nonabox, a Birchbox for pregnant women. Furthermore, he is an avid snowboarder and guitar player. He owns the South Beach designer hotel The Pelican as well as a winery near his northern Italian home.