Does the tightening of sartorial standards at the film festival represent a cultural retreat, or a practical return to form?

Hadid's stay at Cannes was short this year, but the model just wore one of the festival's most iconic looks while out in ...

It is probably fair to say that among the first things you might think of in relation to Jane Austen would be a glamorous event, usually involving dancing, at a well-appointed English country house.