Princess Grace and Prince Rainier's catholic wedding day on April 19, 1956.

24 August 2016 | Catherine, Duchess of Cambridge visits Youthscape in Luton, England. The Duke and Duchess visited Youthscape at Bute Mills to tour the facility and learn about Youthscape's work, and then meet CHUMS and the OM Group and Luton Council of Faiths and Grassroots for discussions about coping with suicide and supporting young people's mental health and emotional wellbeing across faith groups. © Eddie Mulholland - WPA Pool/Getty Images

Crown Princess Victoria of Sweden inaugurating the Storkriket Biosphere Reserve in the municipalities of Sjöbo, Lund, and parts of Eslöv - 28.05.26

As part of the Crown Jewels, this tiara cannot leave Denmark and is traditionally worn only by the Queen of Denmark.

25 June 2017 | Sophie, Countess of Wessex looks on prior to the 3rd/4th place match between Malaysia and England on day nine of the Hero Hockey World League Semi-Final at Lee Valley Hockey and Tennis Centre in London, England. © Alex Morton/Getty Images

2 November 2017 | Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall attend Tea with His Majesty The Sultan and Raja Isteri and the Royal Family during their visit to Istana Nurul Iman on November 2, 2017 in Bandar Seri Begawan, Brunei. Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall are on a tour of Singapore, Malaysia, Brunei and India. © Chris Jackson - Pool/Getty Images

Prince Albert and Princess Paola (at left) welcome Princess Grace and Prince Rainier aboard the Belgian minesweeper, "Van Hanverbeke," here June 12, 1966, as the Belgian couple gave a gala reception in honor of "Belgian Week" during Monaco's 100th Anniversary celebration.

2026 -> Teenager Princess Estelle with her goddaughter, baby Princess Ines (the daughter of Carl Philip and Sofia), during King Carl XVI Gustaf’s 80th birthday celebrations.

Queen Elizabeth II taken around the 50s

𝐓𝐇𝐄 𝐏𝐑𝐈𝐍𝐂𝐄 𝐎𝐅 𝐖𝐀𝐋𝐄𝐒 visits PECAN, a longstanding community charity based in Peckham dedicated to addressing poverty and supporting vulnerable residents, in London | 3 JUNE 2026

The Prince of Wales, Patron of the FA, during the Emirates FA Cup final between Manchester City FC and Crystal Palace FC at Wembley Stadium in London. — 17 May 2025

SERIES: Favourite Day Wear | 193/∞

International Tiara Day Event 2026

Through the Years → The Princess of Monaco (636/∞) 17 May 2026 | Princess Charlene of Monaco and Prince Albert II of Monaco stand on the grid ahead of the Monaco E-Prix, Round 10 of the 2026 FIA Formula E World Championship at Circuit de Monaco in Monte-Carlo, Monaco. (Photo by Simon Galloway/LAT Images)