Only Yekkes are allowed

 

זאת חקת            ובחקתיהם לא תלכו                                                                    Only Yekkes & Oberlanders                        may wear modern clothing The  (*חכמת אדם (פ"ט:א defends Yidden from (כל ארץ אשכנז) Germany who wear clothing similar to the Goyim. The חכמת אדם claims since in Ashkenaz they never instituted a dress code to be different than the Goyim, therefore there is no Issur of ובחקתיהם לא תלכו by keeping their original dress, which is similar to the Goyim. However, Yidden originating from countries where they did institute a dress code that is different than the Goyim (Lithuania included) (regardless of the reason) they may not wear clothing similar to the Goyim. Those who do wear such clothing are עובר on ובחקתיהם לא תלכו and are חייב מלקות.