Reply To: Litvishe chasanim wearing frocks at their chasunas

Frocks and even shtreimals are not an inherently Chasidic dress. All Ashkenazic Yidden, including Litvaks and Yekkes, used to wear frocks and shtreimals. When the Russian government, which also ruled Lithuania and Poland at the time, banned the wearing of ostensibly Jewish clothing such as frocks and shtreimals, many communities stopped wearing them. The Chasidim and some others like the talmidei haGra persisted in continuing to wear the traditional Jewish clothing despite the government gezeira against it.