Kate Middleton Wears Princess Diana's Tiara for Royal Portrait

Kate Middleton and Prince William are seen posing for a royal family portrait with two other generations and there’s a special detail in the photo you might not realize.

The 34-year-old Duchess of Cambridge is wearing the late Princess Diana‘s favorite tiara, which she has been seen wearing in the past as well. The tiara is called the Cambridge Lover’s Knot.

“The Duke and Duchess of Cambridge join The Queen and the Royal Family as they welcome the world’s Ambassadors and High Commissioners from the UK’s diplomatic community to Buckingham Palace for the annual Diplomatic Reception,” Kensington Palace shared on Instagram.

Also featured in the photo are Queen Elizabeth and her husband Prince Philip, as well as Prince Charles and his wife Camilla Bowles.

FYI: Kate is wearing a Jenny Packham gown.