The Duchess of Cambridge is expecting her second baby any day now.
Photo / Getty
While the world is waiting at the hospital where the new fourth in line to the throne - now several days overdue - will be born, a heavily pregnant Duchess of Cambridge was out and about.
Image 1 of 29: The Duke and Duchess attend the ceremonial welcome for Singapore's President Tony Tan Keng Yam at the Royal Garden Hotel on October 21, 2014 in London, England. Photo / Getty Images
Exclusive photographs in the Daily Mail show, Kate, whose second baby was due on Saturday, popped into Buckingham Palace for a dip in the Queen's pool with her son, Prince George, this morning.
Accompanied by up to five bodyguards, the royal mother-to-be drove herself in through the gates, with her son and what appeared to be his nanny, Maria Borrallo, in the rear of the car.
As revealed by the Mail last year, Kate is a frequent visitor to Buckingham Palace's covered pool, used by members of the royal family and staff, where she is teaching George, aged 21 months, to swim.
Dressed in casual clothes and with her long hair down, the Duchess appeared distinctly unconcerned by the fact that she is now several days overdue, manoeuvring her car carefully past a ten-deep crowd waiting at the gates of the Queen's official residence for the daily changing of the guard.
Some even cheered when they saw the Range Rover going through and onto the palace forecourt - although it is not clear whether the tourists had actually spotted her inside.
The Duchess parked her vehicle discreetly around the side of the palace in order to get George from the car and left around an hour and a half later.
The Queen was not present at the time as she is still resident at Windsor Castle.
With no further news of the impending birth emanating from Kensington Palace, William and Kate today thanked the "superfans" camping outside the private Lindo Wing at St Mary's Hospital, Paddington, by sending them a royally-approved breakfast treat.
William and Kate acted after seeing news reports about a group of Union flag-clad royalists who have spent the last fortnight staking out hospital in order to bag a prime seat.
Astonished fans were woken up by members of staff from the royal household personally delivering ten cups of coffee and two boxes containing four croissants, two Danish pastries, an apple turnover and fruit bun - intriguingly wrapped up in pink ribbons.
A Kensington Palace spokesman told the Mail that the breakfast surprise had indeed come from the couple themselves.
"The Duke and Duchess have seen the news reports about these people camping out and they just wanted to let them know they were thinking of them," they said.
Terry Hutt, who may yet celebrate his 80th birthday at the hospital on Thursday, has been sleeping on a bench outside the Lindo Wing since last Monday and said: 'I'd just woken up freezing cold when these two men came over with boxes of cakes and coffees.
Many royal watchers are now hoping the baby, a younger brother or sister for Prince George, will hold on until tomorrow, 29th April in London - the Duke and Duchess's fourth wedding anniversary.