What do women want? Alison Loehnis, the woman at the helm of Net-A-Porter, knows the answer straight away.
Take a good look at the jeans Emma Fox is wearing.
Fashion journalists, while keen to keep you bang up to date as to where Alexa Chung stands on Breton stripes and Miranda Kerr's current thinking vis‑a‑vis Aviator shades, sometimes let substantial shifts in the nitty-gritty of Clothes People Wear go entirely unreported.
There are fashion rules that are sensible and whose logic is self-evident: don't turn up at someone else's wedding in a long white dress, or to a job interview in clothes you'd watch daytime TV in; don't expose legs and cleavage at the same time, unless you have a thick skin and a fly swat in your pocket.