Rather like a pocket handkerchief, a boutonniere captures the attention. It is in stark contrast to the cloth surrounding it and – most likely – the attire of surrounding men. For that reason, it is worth understating. It should be a pretty little focus point, not a heavy head that lolls from the lapel.
Equally, the colour should be kept subtle. A cream with some yellow, green or lilac in there, rather like the flower shown above. This is particularly important when you are not part of the wedding party, so the desire is to be elegant without standing out. Prince Charles is particularly good at this, as one may expect. His buttonholes are always delicate and pointed.
I will be going to my first wedding of the summer on Friday, and am as excited as only someone can be that commits far too much time and attention to what he wears, so really likes occasions when everyone else is too and he can show off without really showing off.
I shall be wearing (in case you are interested): Prince of Wales three-piece check suit, Anderson & Sheppard; white shirt, Turnbull & Asser; silver Macclesfield tie, Tom Ford; white linen handkerchief, Kiton; plain grey socks, Pantherella; black cap-toe shoes, GJ Cleverley.
And of course a small bloom, to be picked on the day.