"The best Gigi," Princess Beatrice's husband Edo wrote below the post Sarah Ferguson is reveling in becoming a grandmother again. On Jan. 29, the Duchess of York, who is popularly known as Fergie, was among the first to celebrate the news that her daughter Princess Beatrice has welcomed a baby girl.

Buckingham Palace announced on Wednesday: "Her Royal Highness Princess Beatrice and Mr Edoardo Mapelli Mozzi are delighted to announce the safe arrival of their daughter, Athena Elizabeth Rose Mapelli Mozzi, born on Wednesday January 22 at 12.57pm, at Chelsea and Westminster Hospital, London.

Princess Beatrice and Edoardo Mapelli Mozzi's new daughter has been named Athena Elizabeth Rose, with her unusual moniker and place in the line of succession now being explained