One-year-old Lilibet, known as Lili, has the middle name Diana, which was chosen in memory of her late grandmother.
Neither Lilibet, nor her brother, 3-year-old Archie, have been seen in public at any of the Jubilee celebrations so far.
It comes amid rumours of fractious relations between the Cambridges and Sussexes, with Harry and Meghan attending their first official engagement since March 2020 on Friday at the thanksgiving service in St Paul's Cathedral.
The two brothers and their wives did not sit next to each other during the service, while the Sussexes also declined to attend the reception at the Guildhall afterwards which was attended by most of the other royals.
Meghan, Duchess of Sussex and Prince Harry, Duke of Sussex attend the National Service of Thanksgiving at St Paul's Cathedral. Photo / Getty Images
Royal commentator Omid Scobie speculated that Thursday was likely to have been the "first moment or the first chance for her [the Queen] to meet her namesake".
The author of Finding Freedom told BBC Breakfast on Friday that Harry and Meghan "want to be as low profile as possible during this trip".
The Sussexes were not on the Buckingham Palace balcony as Jubilee celebrations kicked off, but instead were seen only in a few photos, taken through a window at Horse Guards Parade during Trooping the Colour, showing them interacting with some of the royal children.
Harry and Meghan appear cheerful at the Service of Thanksgiving. Photo / Getty Images
