Princess Charlotte and Princess Eugenie are the only royals to share special connection

ok.co.uk:

Royal christenings have for years been enormous events and cause for celebration among keen fans.The ceremonies have been held in various locations, such as in the Music Room of Buckingham Palace or in the Chapel Royal of St James's Palace.

One location that has only seen two christenings of living members of the Royal Family holds many special memories.The setting in question is St Mary Magdalene Church on the Sandringham Estate in Norfolk, where both Princess Eugenie and Princess Charlotte were christened.The stunning church may look familiar as it is where the Royal Family gather almost every year for the annual Christmas Day service before heading back to Sandringham House for lunch.

Princess Eugenie's christening in December 1990 went down in the royal history books for many reasons, not only was she the first royal for several years to be christened at St Mary Magdalene church, but her christening was the first to be held publicly.The beautiful church on the Sandringham Estate served as the setting for the exciting day as it is where the royals usually enjoy their Christmas Day service.The christening was an enormous family affair as many relatives had arrived to celebrate Christmas at Sandringham House.

The exciting day was attended by family members including the Queen, Diana, Princess of Wales and a young Prince William and Prince Harry.