Prince William, Prince Harry, and Meghan Markle were spotted at Westminster Abbey for a traditional Anzac Day service.

This marks the first time that the father-of-three has returned to royal duties since the birth of his third child with the Duchess of Cambridge on Monday.

The trio arrived at the service honouring Australia and New Zealand’s fallen, where they were greeted by a line-up of people at the door of the Abbey.

As William made his way down the line, he could be heard joking with one man about the impending announcement of the new royal baby’s name.

The Duke of Cambridge revealed that both mother and baby are doing well and that the sleeping situation is going “reasonably well”.

He also added that the new addition to the family is “behaving himself, which is good news.”

Earlier in the day, Meghan attended her first official service of remembrance, where she watched her future husband lay wreaths near Wellington Arch in central London.

The American actress passed a cultural milestone when she and Harry were welcomed by Te Atarati Waratini from Gadi Ronana with a traditional hongi, which involves the soft pressing of noses and the sharing of each other’s breath.

Harry, a former army officer who served for 10 years in the forces, laid his floral wreath at one of a group of metal crosses near Wellington Arch in central London as the sun broke over the London skyline.