Princess Kate, the wife of Prince William, wore two pieces of jewelry that once belonged to her grandmother-in-law. She wore Bahrain Pearl Drop Earrings and a four-strand pearl choker necklace, both from the Queen's collection. Princess Diana wore the pearl choker for a dinner thrown by Queen Beatrix and Prince Claus of the Netherlands at Hampton Court Palace in 1982 - which was one of Diana's first royal engagements. The monarch has worn the jewellery in the 80 and 90s, including at a banquet for former British Prime Minister Margaret Thatcher's 70th birthday. 📸 @gettyimages #princesskate #katemiddleton #princessdiana #queenelizabeth