If the suit is unbuttoned, where should be the stickpin?

西装敞着穿时，领带夹应在衬衫的哪两粒钮扣之间？

youdao

A portrait type that appeared with relentless frequency in eighteenth-century England is the familiar image of a gentleman poised with one hand inside his partially unbuttoned waistcoat.

18世纪英国出现频率极高的一种肖像类型，是人们熟悉的绅士单手插在部分没有扣子的马甲里的形象。

youdao

There is a nice, casual, friendly look to having your jacket unbuttoned and your tie out in the open.

FORBES: To Button Or Not To Button, That Is The Question -Media Training