Lederhosen and Dirndl in Frankfurt. A bit out of the way in Griesheim but you need to come here…read morebefore you ever even consider buying the Chinese knock-offs on sale at Kaufhof and the like. This place has the real thing. lederhosen that will last a lifetime. Nice selection of everything you need for your own version of Wiesnnmode. Sweaters, Vests, hats, Jackets. Even had haferlschuhe in 11.5 12 shocking.
Girls can't tell you about the dirndls but probably similar to Leederhosen i.e. real German made product.
Prices were very reasonable. I got a pair of Kurzen in alll leather for EUR155 vs shite Kauf hof asking EUR250 for Chinese work and synthetic materials. Should be your first stop for Trachten in Fft area.