My understanding is that today, most men's clothing buttons left-on-right, i.e. the buttons are on your right. A Hassidic kapote or bekkeshe reverses this, but if you order a "Litvish" ("Lithuanian", ...
It is known that the Vilna Gaon put 2 sectors of Chassidus in Cherem. I am wondering who has permitted them now seeing as we non-Chassidim don't make borders between them and ourselves.