Princess of Wales Wears Diana's Pearl Earrings and Three Poppies at Remembrance Sunday

Catherine, Princess of Wales, joined her husband, Prince William, and other members of the British royal family over the weekend for the annual Remembrance Sunday ceremony, the observance held on the second Sunday of November to honor members of the British and Commonwealth armed forces who lost their lives in military service.

The Princess, 44, wore an all-black ensemble, and the detail that drew the day's attention was her jewelry: the Collingwood pearl earrings, which were gifted to Diana, Princess of Wales, on her wedding day and have since become part of Catherine's collection. She also wore a three-poppy pin, believed to honor her great-grandmother Olive Middleton's three brothers, who all served and died during World War I.

Remembrance Sunday is observed on the Sunday closest to Remembrance Day, whose official date is Nov. 11. Each year, people across the United Kingdom pause for two minutes of silence at 11 a.m. to mark the end of World War I and remember those who died serving their country. Prince William wore the red-collared Officer's Cloak of The Blues and Royals, the British Army cavalry regiment in which he serves with the Household Cavalry, and laid a wreath at the Cenotaph war memorial.

The appearance was among the most searched topics in the United States on Monday — 'princess of wales' stood at No. 3 on Google Trends' U.S. list in the day's late update — as royal watchers shared the Remembrance weekend photographs and the story behind the earrings and the poppies.