noun, masculine/pʁɛ.t‿a.pɔʁ.te/plural: prêts-à-porter
ready-to-wear clothing, off-the-rack clothing, off-the-peg clothing
“1951, Le Figaro, 28 Dec 1951, p.3, col. 6” — In between ready-to-wear clothing and traditional bespoke attire, one of the biggest tailors in Paris has launched a new option for men.
1951, calque of English ready-to-wear.