A quatre épingles. (Fr.) , “With four pins.” A man whose dress is distinguished by an affectation of superior dandyism, is said to be mis à  quatre épingles, or, tiré à  quatre épingles, or as the English say, just come out of a band box. This saying may probably have been adopted from the custom of adjusting the neckcloth with four pins, practised by the exquisites of Paris.

Quoted from: Hugh Moore, Esq.: A Dictionary of Quotations. London: Whittaker, 1831.