Prince Louis, the third child of Britain's Prince William and wife Kate, will be christened at a small, private ceremony overseen by the Archbishop of Canterbury later on Monday, but Queen Elizabeth will not be there, his father's office said.
The 92-year-old monarch has a busy week ahead, marked by a visit from US President Donald Trump in Windsor on Friday.
(L-R bottom row) The royals - Prince William of Cambridge, Prince Charles of Wales, Camilla of Wales, Kate Middleton of Cambridge, Prince Andrew of York, Princess Beatrice of York and Princess Eugenie of York - attended the wedding in full force in their fashionable best.
Joining Mr Pelly as Prince Louis' godparents will be Nicholas van Cutsem, Harry Aubrey-Fletcher, The Lady Laura Meade, Sophie Carter and Lucy Middleton.
The Queen has spent the weekend at Sandringham, her country home in Norfolk, and is traveling back to London today.
In addition to similar facial expressions, Princess Charlotte also appears to share similar lips, eyes, and nose as her mom.
The Duchess of Cambridge, 36, was seen wearing floral pearl earrings at Louis' Christening. The stiletto came in a nude shade and paired beautifully with the christening robe - a replica designed by Queen Elizabeth's dressmaker, Angela Kelly - draped over the 11-week-old baby in her arms. The christening cake served at the tea is a tier taken from William and Kate's eight-tier wedding cake.
The young prince, who has an older brother George, 4, and sister Charlotte, 3, was baptised using water from the River Jordan.