Prince William looked to be struggling to stay awake during the Anzac ceremony at Westminster Abbey. Photo / via video
He is juggling a newborn baby and royal duties and Prince William appeared to show the strain as he battled heavy eyelids in Westminster Abbey.
The Duke of Cambridge joined his younger brother Prince Harry and his fiancee Meghan Markle at an Anzac Day service in London, the Daily Mail reported.
But although he was in good spirits laughing and joking before the service, it appeared tiredness may have overcome the father-of-three once he sat down for the ceremony.
William has returned to royal duties for the first time since his wife the Duchess of Cambridge gave birth on Monday.
He now has three young children at home - his 2-day-old son, Princess Charlotte, who will turn 3 next month, and Prince George, 4.
The Anzac Day service is the culmination of a day of events honouring Australia and New Zealand's fallen, and those who have served in subsequent conflicts, which began with a dawn service and wreath laying.
As William met Sir Jerry Mateparae, New Zealand High Commissioner to the UK in Westminster Abbey, the Dean of Westminster joked about the eagerly anticipated name, saying: "Jerry would like it to be Jerry."
Asked how the duchess and the baby were, the duke replied: "They're very well thanks."
He said they are "in good form, luckily", and added: "Sleeping's going reasonably well so far, so he's behaving himself, which is good news."
Carole Middleton picked up Prince George today to help ease the load on her daughter Kate and Prince William, and she took him home to see his new baby brother - as his father teased about potential names.
Kate's family – including proud grandparents Michael and Carole Middleton, her sister Pippa and brother James – have all pitched in to help and been to Kensington Palace to have a cuddle with the new arrival.
Mr and Mrs Middleton, it is understood, were among the first visitors to see the new prince, and Kate's sister, Pippa, 34, who is reportedly pregnant with her first child, was seen driving out of the gates of Kensington Palace yesterday morning in a pink coat and sunglasses, with a broad smile on her face.
Prince Charles, however, has been unable to see his new grandson as he was in Scotland on a private break when the Duke and Duchess of Cambridge's third child was born on Monday morning.
A royal source said Charles, 69, was very keen to see his grandson but would "have to work out a time with his family when he gets back" from France.
The prince did say, however, that he and baby's step-grandmother, the Duchess of Cornwall, were thrilled at the new arrival.
"We are both so pleased at the news. It is a great joy to have another grandchild," he said.
It is anticipated, in line with other royal births, including Charlotte, that the name will be released by Kensington Palace soon by press release and on social media.
The Queen, who is at Windsor this week, will likely be informed by phone as to the name of her sixth great-grandchild.
She also may not see him until the weekend, when it is likely that William and Kate will bring their new son to the castle to see her and Prince Philip, who is recovering from a hip replacement and unable to travel.
Royalists and bookmakers alike, meanwhile, have waited patiently since Monday to find out the name of Prince William and Kate Middleton's new arrival.
More than 100,000 bets were placed across the UK betting industry on the baby name. Arthur was leading the way this morning as the bookmakers' favourite.
But this afternoon bookies William Hill suspended betting after a major gamble saw the odds of Alexander tumble from 14/1 in to even money in the space of an hour.
Bookmakers have also suspended bets on the baby being named Alexander after a flurry of late bets.