His company did not, however, design the SS uniforms; that was done by others. Don't know whether the company designed Wehrmacht uniforms but I doubt it was asked to do so. It would probably be more accurate to say that the company produced military and SS uniforms for the Nazis.

Coco Chanel did not design Nazi uniforms--she closed her fashion house when the war began. She did, on the other hand, try to seize her Jewish business associates' holdings once the Nazis occupied Paris and worked closely (that's both an understatement and a euphemism) with Nazi intelligence services during the occupation.