Queen Elizabeth's Platinum Jubilee wasn’t the only celebration to captivate the world last weekend -- Saturday was also the first birthday of Lilibet Diana, Prince Harry and Meghan Markle's second child.
The Duke and Duchess of Sussex recently returned to the U.K. for the Jubilee, staying at their old home in Frogmore Cottage, where they recently renewed a lease.
The queen also met her great-grandaughter for the first time on Thursday. A source close to the family tells ET that Meghan and Harry celebrated their daughter's big day at Frogmore with several relatives, including Princess Anne's children, Zara Tindall and Peter Phillips, along with their spouses and children.
The source added that Peter has been very close to Prince William and Prince Harry ever since Princess Diana's death in 1997, when the queen asked Peter to join the boys in Balmoral.
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