And I’m not the only one, most American Roshei yeshivos & Rabbonim will agree.
Maybe that just shows how depraved America has gotten, that the Rabbonim in America have to teach lower levels of tznius then the rest of the world can handle.
This sefer can be found on virtually every Chareidi bookshelf in E”Y and from what I understand, it is found more often than not in the frum communities of England as well.