The Diamond Diadem, made for the famously extravagant coronation of George IV in 1821, has been worn by the queen to and from the State Opening of Parliament throughout her reign.
She allows her hair to be teased into a lofty blond arc, a sort of cotton-candy diadem, and her speech, with training, gets heavier and slower, the emphasis landing on selected, morally significant syllables like a hammer hitting an anvil.