At Khaite, it was all about the classic tuxedo vest, which looked quite sexy in a borrowed-from-the-boys way underneath a boxy cropped blazer. And of course, elegant tailored vests were the order ...

The humble sweater vest has had one hell of a decade. In the early 2010s, the knitwear staple was all but left for dead, the sort of fuddy-duddy sartorial relic only your grandpa could love.