The next occasion for Queen Camilla and the Princess of Wales to wear tiaras together may happen sooner than expected. South Korea's president has accepted an invitation from the King for a state visit to the UK in November. During this visit, Charles and Camilla will host Yoon Suk Yeol and his wife Kim Keon Hee at Buckingham Palace. Typically, such state visits involve a lavish state banquet in the palace's ballroom, with a formal dress code requiring gentlemen to wear tuxedos and ladies to don long gowns, often accompanied by tiaras. While it hasn't been confirmed whether the Prince and Princess of Wales will attend this state visit, it's probable that Kate will choose one of her preferred tiaras, similar to her stunning appearance at the previous state visit during the King's reign when she wore a white embellished Jenny Packham gown and the Lover's Knot tiara while hosting President Cyril Ramaphosa last autumn.
The diamond and pearl tiara was a frequent choice of headpiece for Diana, Princess of Wales, who is no longer with us.
On the other hand, Queen Camilla made a stunning impression in a royal blue lace evening gown designed by Bruce Oldfield, accompanied by the sapphire and diamond tiara that once belonged to the late Queen Elizabeth II.
It's worth noting that during a recent three-day state visit to France, Camilla chose not to wear a tiara for the state banquet at the Palace of Versailles. Meanwhile, the Queen looked absolutely elegant in a navy caped Dior gown, complemented by a matching set of sapphire and diamond earrings and a necklace.
It is anticipated that Camilla will don a tiara for the State Opening of Parliament in London on 7 November, as this year's event is set to include its full ceremonial aspects.
However, prior to that occasion, the Queen wore the impressive Greville tiara during her state visit to Germany in March.
The most recent instance when the Princess of Wales adorned a tiara was at the royal wedding of Crown Prince Hussein and Princess Rajwa in Jordan.
During the evening reception, Kate looked radiant in a sparkling pink Jenny Packham gown while wearing the Lover's Knot tiara.
Furthermore, during the annual Diplomatic Corps reception at Buckingham Palace in December of the previous year, the Princess chose to wear the Lotus Flower tiara, pairing it elegantly with her red Jenny Packham gown.
Kate had her initial tiara experience on her wedding day to Prince William in 2011. She was graciously loaned the Cartier Halo tiara, a piece with a history dating back to 1936 that once belonged to the late Queen Mother.
Nevertheless, the Princess has not opted to wear her wedding jewels again since her wedding day.
In the past, it was common for royal women to adorn themselves with jewelry when attending movie premieres and formal social events.
Nonetheless, in contemporary times, tiaras are typically reserved for specific occasions, such as state banquets, the Diplomatic Corps reception, and the State Opening of Parliament.