Millinery: If you want to get ahead, get a blue hat

The blue bandana-style headwear worn by Prime Minister David Cameron while visiting Amritsar in India might have been a combination of respect for the Golden Temple and a politician’s eye for a photo opportunity. But it seems he inadvertently latched on to a trend for blue hats.

Recently we’ve seen Russell Crowe don a casquette policier in Les Misérables, Rihanna showed the art of wearing one at a jaunty angle, and caped comic Noel Fielding sported a navy bandana. The fashion has even had the royal seal of approval from Princess Beatrice, an expert on extravagant headgear. Never let it be said that the PM’s out of touch...