Referred to as the "Jeans Genius" by Suzy Menkes, he is the President of OTB Group, the parent company of Maison Martin Margiela, Marni, Viktor & Rolf, Diesel, Staff International (manufacturer and distributor of DSquared², Just Cavalli, Vivienne Westwood, and Marc Jacobs Men), and Brave Kid.
Россо — создатель марки Diesel, президент холдинга OTB, в который входят Maison Martin Margiela, Marni, Viktor & Rolf, Diesel & Staff International, Just Cavalli, Vivienne Westwood и Marc Jacobs Men.