No woman looks bad in a tiara. As designer Vivienne Westwood said: “You can wear rubbish and you can just put [a tiara] on and it does something for your hair.” Hence the tiara’s return to glamorous heads, from the tousled locks of Georgia May Jagger to the regal crown of the Duchess of Cambridge. Although in European royal circles in previous centuries, crowns were daily attire, in the 20th century they were worn only for formal evening occasions, and then only by married women. In the past few years crowns have appeared on every catwalk, from Louis Vuitton to Roberto Cavalli. Why? Partly, specialists say, because of the return of conspicuous displays of wealth in places like China and Russia, and partly because many are extremely good value. A 19th-century tiara, for instance, can be purchased for less than $20,000, and makes a perfect heirloom – particularly those, like the Garrard Tudor Rose collection, that can be dismantled and made into earrings, brooch and pendant. What woman wouldn’t love that?