There is a trend which I noticed round about the time of the royal wedding last year in the UK, and which has now apparently arrived in France to wear cardboard masks which are photographs of celebs' faces with cut out eyes.
You can get them of anyone, pretty much, as far as I can tell. Royals, sports stars, films stars. If you're going to an event in Hyde Park they are apparently an optional part of the uniform. You must either be face painted or masked.
There are websites - loads of them - where you can buy them.
Looking through their catalogue, or a google image search, is spooky enough - but seeing people actually wearing them is even more frightening.
Why would someone wear these things? Why? They seem to have appeared from nowhere, and have spread. Could it not just be a trend which stays in Britain? Apparently not. If I really wanted to waste money and give my daughter nightmares I could get this one, of François Hollande.
Trends come and go - even within fancy dress and other shite that people wear to watch parades and processions and events. But Murray masks at Wimbledon? Has the world gone stark raving bonkers? What does it feel like to be one of these celebs and having several very strange versions of yourself staring back at you from the crowds?
When the future Duchess of Cambridge was waving at the crowds on her way to her wedding did she notice the hundreds of identical Kate faces in the crowds? Is it supposed to be some sort of compliment? Or do the people who wear them actually aim to distract or freak out the subject of their mask?