Rosen found himself hamstrung by the label's owners, Frank Mori and Tomio Taki, despite their friendship.

WSJ: A Homegrown Fashion Mogul

Colao, Dolia Estevez, Daniel Fisher, Agustino Fontevecchia, Tomio Geron, Jenna Goudreau, Lisa H.

FORBES: Inside The 2013 Billionaires List: Facts and Figures

In the new issue of Forbes, Tomio Geron writes about the unstoppable rise of the share economy.

FORBES: Beyond The Auto Industry's Secret Fear: The Share Economy

Additional reporting by Kerry A. Dolan and Tomio Geron.

FORBES: Foxconn Buys Stake In Camera Maker GoPro, Turning Founder Into A Billionaire

Additional reporting by Tomio Geron in San Francisco.

FORBES: No One Is More Excited For Google Glass Than Facebook CEO Mark Zuckerberg

Tomio Geron contributed to this story.

FORBES: Billionaire David Duffield's Workday Goes Public, Doubling His Fortune