I received a request for some information the traditional clothing of Switzerland, especially of the area around Luzern, so I will give a very short overview of this information.
Switzerland, as is well known, is a multilingual nation which strongly identifies as one ethnicity. This is extremely unusual, and is rooted in the fact that the Swiss Confederation was voluntary on the part of its citizens, at least at first, and as it grew, that was still mostly true.
Here is a linguistic map of Switzerland, one showing the names of the cantons, and one showing more detail.
Lotti Schuerch - Louise Witzig, 'Trachten der Sweiz', Bern, 1978
Louise Witzig, 'Schweizer Trachtenbuch', Zurich, 1954
Louise Witzig et Edwige Eberle, 'Costumes Suisse', Lausanne,