Duchess Kate stands in for the queen at the annual Review of Queen's Scouts Sunday at Windsor Castle.(Photo: Olivia Harris, AFP/Getty Images)
Duchess Kate, finally looking clearly pregnant, stood in for Queen Elizabeth II, who turns 87 Sunday, in celebrating scouting at Windsor Castle.
On a day when attention was focused on the London Marathon, where Prince Harry was among VIPs at the finish line, the Duchess of Cambridge presided over the annual Review of Queen's Scouts, which includes a service at the castle's St. George's Chapel.
Kate is a volunteer with the Scouting Association, and she went camping with the group recently. For today's event, she wore a quite short pastel Mulberry coat, fawn pill-box hat and her often-seen nude platform heels.
Even though she was in a coat for the outdoor event, her belly was clearly showing for the first time, and she wasn't covering it up. She's about six months pregnant and is due in July.
The queen usually presides over the scouts review, one of her many annual engagements; a recent study found that in 61 years on the throne, she has carried out 15,000 official engagements.
But instead she celebrated her birthday privately, the palace said. The queen's birthday is celebrated officially in June, when the weather is better.
The scouting review, which dates back 80 years, honors the achievements of young people who have won the Queen's Scout award for community service. More than 400 scouts from around the U.K. and the Commonwealth were at the castle. Kate met with those who won awards for bravery and heroism.
Besides volunteering with the scouts, the duchess is expanding her menu of royal philanthropy by taking on patronage of three new charities: Place2Be, which provides school-based mental health services; SportsAid, which supports disabled and non-disabled teen athletes; and the Natural History Museum, a world-famous tourist destination in London and leading research center.
Kate is already a patron of the National Portrait Gallery as well as organizations that fight addiction, run hospices for sick children, and promote art-making as therapy.