Image may be NSFW. Clik here to view.Bianca Jagger in a cactus hat on Mustique in the 70sSpring and hats have something of a love-hate relationship. Occasional if unreliable sunshine means that there is great value in donning a wide brimmed chapeau to shield delicate winter eyes from the glare, but the brisk March breezes have a tendency to cause mischief, whipping hats from the heads of the unwary as they attempt to cross the road. This week’s most loved seems to offer a solution – albeit one more fittin...