Prince Louis of Cambridge is being christened in a private ceremony but the the Queen and the Duke of Edinburgh did not attend.

Buckingham Palace says the decision was not taken on health grounds, instead, mutually agreed by the Queen and the Cambridges some time ago.

The Duke and Duchess of Cambridge made their way into the service in London with their three children.

It is the first time the family have been seen together in public.

Eleven-week-old Louis was dressed in the cream, frilly lace royal christening gown as the Archbishop of Canterbury welcomed the royals.

The Duchess was heard describing her sleeping son as "very relaxed and peaceful" while holding Louis.

Kate added, with a smile: "I hope he stays like this."

Kate speaks to Archbishop of Canterbury Credit: PA Images

Louis's aunt and uncle, the Duke and Duchess of Sussex were among the guests in the chapel at St James's Palace in London.

Meghan - who is attending her first royal christening - looked stylish, dressed in an olive-green Ralph Lauren outfit and Stephen Jones hat.

The Duke and Duchess of Sussex Credit: PA Images

Who are the godparents?

  • Guy Pelly, a close friend of the Duke

  • Nicholas van Cutsem, one of the van Custem brothers, who are long-time family friends of William and Harry

  • Harry Aubrey-Fletcher, who went to Ludgrove School and Eton with William

  • Lady Laura Meade, who is married to William's close friend James Meade

  • Hannah Carter, formerly Hannah Gillingham, Kate's Marlborough schoolfriend

  • Lucy Middleton, the Duchess's cousin

Others people there Louis's grandfather, the Prince of Wales, step-grandmother the Duchess of Cornwall and maternal grandparents Carole and Michael Middleton.

The Prince of Wales and the Duchess of Cornwall arriving Credit: PA Images

Kate's brother James Middleton, and Kate's pregnant sister Pippa with her husband James Matthews - the brother of former Made In Chelsea star Spencer Matthews - were also among the guests.

Pippa Middleton and her husband James Matthews arriving for the christening Credit: PA Images

Prince Louis Arthur Charles of Cambridge, fifth in line to the throne, was born on St George's Day, April 23, at the private Lindo Wing of St Mary's Hospital in Paddington, London, weighing 8lb 7oz.