>>10850945It IS Austria's traditional outfit.
Since you were so keen on citing Wikipedia
In Austria, dirndls continue to be worn on public occasions, even by younger women. The dirndl is considered an important part of Alpine folk culture. Other aspects of folk culture are Lederhosen for men, traditional sports (e.g. shooting, music, crossbow), skills (e.g. embroidery) and musical traditions (e.g. singing Christmas carols and Schuhplattler dance groups).[78] The folk culture is promoted by and protected by local folk culture associations, which are affiliated with the Bund der Österreichischen Trachten- und Heimatverbände (Federation of Austrian folk costume and homeland associations).[79]
In Austria, the dirndl is a symbol of national identity, seen in Austria as a national symbol.[80] In tourist settings, staff in offices, restaurants, wineries and shops often wear dirndls as a work uniform; this is also the case in the non-Alpine regions in the east of Austria.[11] Even in everyday life, many Austrian women wear dirndls as an alternative to other fashions.[11][18]
https://en.wikipedia.org/wiki/Dirndl#Austria