The two crossword solutions for the term 'Milan-based fashion house' are Versace and Prada. Versace is an Italian luxury fashion house founded in 1978 by Gianni Versace. It is now owned by his sister Donatella Versace and is based in Milan, Italy. Prada is an Italian luxury fashion house founded in 1913 by Mario Prada. It is now owned by his granddaughter Miuccia Prada and is also based in Milan, Italy.