De War Kostio 6 December 2013 De War Kostio was a french fashion house. Lysta De Rivalo-Mazères, born Kostio de Warkoffska, opened her atelier in Paris in the late 1930s. She specialized in knitwear and tailored clothing. The maison closed around 1953. Post Views: 75 Previous O'Rossen Newer Griffe