Collar (clothing) - Buttoning

Buttoning

Conventions on fastening the buttons on a collar differ globally. In the United States and the United Kingdom, the top button is virtually always left unbuttoned, unless one is wearing a necktie, but unbuttoning two or more buttons is seen as overly casual. By contrast, in Slavic countries, including at least Poland, and Ukraine, the top button is buttoned even in the absence of a tie.