Renzo Rosso is the President of the company that is the parent of which avant-garde fashion house?
Renzo Rosso:  Referred to as the "Jeans Genius" by Suzy Menkes, he is the President of OTB Group, the parent company of Diesel, Maison Margiela, Marni, Paula Cademartori, Viktor & Rolf, Staff International (manufacturer and distributor of DSquared², Just Cavalli, Maison Margiela, Marni and Vivienne Westwood), and Brave Kid (manufacturer and distributor of Diesel Kid, Dsquared², John Galliano Kids, Marni and Trussardi Junior). Viktor &amp; Rolf: Viktor & Rolf is a fashion house, which specialises in creating conceptual and avant-garde designs.
Viktor & Rolf