Britain: The Halo Tiara For her 2011 wedding to Prince William, Kate Middleton wore the royal family's famous Cartier Halo tiara. The piece had been a gift from King George to the Queen Mother in 1936, though at that time the couple was known as the Duke and Duchess of York. Owing to its special place in the family history, many British royals have been lucky enough to wear the piece including Princesses Margaret and Anne.
Kate was loaned this maple-leaf brooch by the queen before Kate and Prince William embarked on their 2011 tour of North America. The brooch was originally given to the Queen Mother by King George VI in 1939, before they took off on their first Canadian tour, so there is a nice romantic connection to the brooch. Since then, the queen and Camilla, Duchess of Cornwall, have both worn the brooch during Canadian visits. Source: Getty / Chris Jackson, Oli Scarff, Chris Jackson