Examples:
Wunderkind-Wolfgang Joop
Wunderkind is Wolfgang Joop's personal vison of what a contemporary, sophisticated and independent woman wants in her wardrobe. It is an intimate and emotional expression of the designers taste, one that explores the contradictions and dualities inherent in each woman. - http://wunderkind.de/flash.htm

Rena Lange
The brand 'Rena Lange' was run by Renate Guenthert for about 25 years until she killed herself and gave the business to her son. -http://www.renalange.com/

Felder Felder
Felder Felder is run by the two identical twin sisters Anette and Daniela Felder. The two are german, studied
London and their clothes sell all over the world
-http://www.felderfelder.com/collections/spring_summer_2012.html