Kate Middleton joined Prince Harry and Prince William to celebrate the Queen's 70th anniversary at Windsor Castle, and wore a *massive* pearl necklace to the occasion which might look pretty familiar.
The statement necklace has been worn by Princess Diana, and this is apparently the first time Kate has stepped out in it. That said, the piece is actually owned by the Queen:
FYI, Meghan Markle does *not* appear to have been in attendance with William, Harry, and Kate at the Queen's party—but she has reportedly touched down in London after wrapping up filming on her show Suits.
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