Levels of formality and local custom play an important part in the details - and of course, if back pockets are added to the trousers, then the jacket requires vents.

Poirot's 'little vase' would have been fairly antique even at that time, a far plainer holder is the modern version. This is of course what is seen in UK and European countries, the US is a rule unto itself in matters sartorial. The holder usually contains a little water, sometimes held in a sponge, to keep the flower from wilting for as long as possible.

Anne the Pleater :ootd: