Even when your name is followed by a title like “Princess,” “Duchess,” or “Queen,” a tiara isn’t exactly a common accessory.

The diamond-encrusted topper is only worn on extremely important occasions, despite the fact that the royals in our Disney-inspired imaginations put it on every morning. Less than a dozen tiaras have been worn by Kate Middleton in her eight years as the Duchess of Cambridge (in public, that is; she probably washes her teeth in one every day). The Cartier Halo Scroll tiara, which was given to Queen Elizabeth by her father, King George VI, for her 18th birthday, was evidently Middleton’s most memorable tiara moment of her 2011 royal wedding.

Meghan Markle, the Duchess of Sussex, made headlines recently when she donned her first tiara at her nuptials to Prince Harry in May 2018. She chose the Queen Mary Diamond Bateau, which Queen Mary gave to Queen Elizabeth in 1953.

Princesses Beatrice, who, like her sister, was born into royalty rather of marrying into the family as Kate and Meghan did, should know that wearing a tiara is not conventional (flashy hats, however, are OK). The cause? Members of the British royal family who are married typically wear tiaras. Beatrice will probably don her first tiara during her impending wedding to Edoardo Mapelli Mozzi, much as Eugenie did at her wedding to Jack Brooksbank in October 2018.

Despite the fact that this is the conventional method, there have always been exceptions. Years before she married her first husband, Mark Phillips, Princess Anne, the only child of Queen Elizabeth, wore one to the official opening of Parliament.

Princess Margaret, the sister of the Queen, frequently wore one of the accessories before she wed Antony Armstrong-Jones.