According to CBS News:
Prince George of Cambridge was christened Wednesday at a rare four-generation gathering of the royal family in London.
Palace officials said water from the River Jordan…would be used for the christening. The river’s waters have often been used…on…royal infants.
Some royal watchers camped outside the palace for more than 24 hours to obtain a good vantage point for watching the guests arrive, but the ceremony was private.
…official pictures…are expected to include a historic multi-generational photograph of the queen with three future monarchs: her son Charles, her grandson William and her great-grandson George.