A fair-fashion finder for Germany, Switzerland and Austria. You can directly buy clothes or find brands, stores and webshops. Additionally "getchanged" offers tours through the fair fashion scene in Berlin. However, if there is no tour offered on the date of your trip to Berlin - you can download the map and explore "green and fair Berlin" by yourself.
(link: http://www.getchanged.net/de/magazin/aktuell/green-fashion-roadmap-zur-fashion-week-berlin-4370.html text: Direct link to the Berlin map)