Vestiaire Collective remains a closely held private company. It has raised more than €100 million (including $20 million from Condé Nast in 2013); according to Moizant, funding was "never a problem."

Being French was never a problem either – and in fact, has proved to be a great advantage. Although 65% of the business is generated outside France, its homeland is still the single biggest buying-and-selling market.

"In this particular industry, a Parisian image gives undisputed credibility and heritage to any luxury brand," elaborates Moizant. "It's a good thing – and we are proud of our French DNA."

The company's next biggest markets are the UK, Germany and the US, with "developed Asia" (Hong Kong, Singapore and Australia) quickly gaining more market share. Moizant also claims that China, Korea and Japan have grown organically for the company without any PR or marketing effort. Welcome to the future, where fashion is now at your fingertips.