Prince Louis' christening will go down today inside The Chapel Royal at St. James's Palace, and now, we know who the little guy's godparents will be.
The monarch, 92, will be travelling back from Norfolk on Monday at the start of a busy week.
Press Association A sleeping prince!
Prince George and Princess Charlotte each held on to their dad's hands as he guided them towards the chapel.
The appearance was particularly poignant as it was the time the Cambridge's appeared in public as a family of five.
BBC reports that Middleton was overheard saying Louis was "very relaxed and peaceful", and joked to the archbishop that she hopes "he stays like this".
Boris Johnson resigns as British foreign secretary
Asked about the possibility of a vote of no confidence on Mrs May, he said: "I would firmly believe that she would win that". Mrs May said she was "sorry - and a little surprised" by Mr Johnson's move after his apparent support on Friday.
Miss Middleton and Mr Pelly each read a lesson during the service, Kensington Palace said.
Since then, the christening gown has become a cultural marker in the regal history books as it has been worn by 62 royals in total including Princes Harry and William.
Little baby Louis wore a handmade replica of the Royal Christening Robe, the palace said, which was made by the queen's longtime dressmaker, Angela Kelly.
Guests were served slices of christening cake, which is a tier taken from The Duke and Duchess of Cambridge's wedding cake. His brother, William van Cutsem, is Prince George's godfather.