Kate's choice of outfit for Prince Louis' christening was not surprising, as the Duchess had previously matched her dresses to compliment the cream colours of the lace and satin Royal Christening Robe worn by her 11-week-old son.
Louis´ other godparents are: Nicholas van Cutsem, whose family is close to the royals; William´s school pal Harry Aubrey-Fletcher; Laura Meade, who is married to William´s close friend James Meade; Kate´s schoolfriend Hannah Carter; and the duchess´s cousin Lucy Middleton.
The young prince, who has an older brother George, 4, and sister Charlotte, 3, was baptised using water from the River Jordan.
Kensington Palace has not released the guest list, but newlyweds the Duke and Duchess of Sussex are expected to attend, along with Kate's pregnant sister Pippa Middleton and their brother James Middleton.
Princess Eugenie is the only one of Queen Elizabeth II's children and grandchildren not to be baptised in the Lily Font; hers was a public christening instead. As the palace further explains, "the original gown was subsequently worn for all Royal christenings, including The Queen, her children and her grandchildren".
Our bets are on Princess Charlotte doing the same.
The six godparents and their spouses were also due to attend.
Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge arrive at the Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte on July 5, 2015.
Louis' godparents, who will be announced on the day, will take part in the private 40-minute traditional religious ceremony, which begins at 16:00 BST.