Princess Beatrice, daughter of Prince Andrew and Sarah, Duchess of York, married Edoardo Mapelli Mozzi, a property developer, in a small, private ceremony in Windsor, England on July 17.

According to the royal family, Princess Beatrice wore a vintage dress by Norman Hartnell and the Queen Mary diamond fringe tiara, both of which belonged to her grandmother, Queen Elizabeth, who wore the tiara on her own wedding day in 1947. The Queen’s daughter, Princess Anne, also wore the tiara on her wedding day.

A source told PEOPLE that the Queen and Beatrice, 31, are “exceptionally close.” The tiara, they say, is “arguably the most sentimental [piece] lent from the Queen yet.”

According to royal reporter Omid Scobie, the dress was first worn by the Queen at the 1967 State Opening of Parliament. It was remodelled for Princess Beatrice by Angela Kelly, the Queen’s personal dresser, and Stewart Parvin, a British bridal designer. 

See more photos of Princess Beatrice’s wedding day, shared by the royal family, below.

Photo by Benjamin Wheeler via Twitter/@RoyalFamily

Photo by Benjamin Wheeler via Twitter/@RoyalFamily

Photo by Benjamin Wheeler via Twitter/@RoyalFamily

Photo by Benjamin Wheeler via Twitter/@RoyalFamily

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