The occasion was a rare full-family outing: King Philippe and Queen Mathilde attended with all four children. Princess Elisabeth, 24, also shone at the event; she previously had her own tiara moment in 2022 with a headpiece that had been gifted around her coming-of-age. The dinner included notable tiaras on other female royals, and an official photograph captured Emperor Naruhito and Empress Masako with the Belgian family before the banquet.
Eléonore’s debut follows a similar moment in the Netherlands earlier that month, when 19-year-old Princess Ariane wore a historic diamond tiara at a state banquet. Both young royals occupy the role of the youngest sibling in households headed by future queens, underscoring a fashionable rite of passage in modern monarchies.