Duchess Catherine is reportedly keen to step up her royal duties following Prince Philip's retirement.
Prince William and Duchess Catherine
The 35-year-old beauty and her husband Prince William - who have three-year-old son Prince George and two-year-old daughter Princess Charlotte - will move back to London from Anmer Hall in Norfolk in the summer and are expected to both take on more duties now that William's grandfather has stepped down after 65 years of service.
An insider says with taking on more work the couple will struggle to find time to have another child.
A source told The Sunday Telegraph newspaper: "I would be very surprised if they have a third child. They have got a boy and a girl - there is a sense that their family is now complete and they are moving onto the next chapter in their lives."
Meanwhile, the Duke of Edinburgh's final duties will include meeting the King and Queen of Spain, attending the Chelsea Flower Show, and hosting a charity dinner.
The 95-year-old royal is to step down from public engagements later this year, but has a list of already-scheduled events in place for the coming months that he intends to honour.
On May 9, he will join his wife Queen Elizabeth to meet with teachers and pupils at Pangbourne College in Reading, Berkshire, to celebrate the school's centenary.
And on May 14, he will present trophies at the Royal Windsor Horse Show before heading to the Chartered Management Institute's President's Dinner at Banqueting House in London in his role as the institute's patron the following day.
In two weeks time, a listing on the royal family's official website states he will "hold a Dinner at Frogmore House, Home Park Windsor" on May 19 for the Duke of Edinburgh's Award, and five days later he will host "receptions for young people who have achieved the Gold Standard" in the Duke of Edinburgh's Award.
Three annual Buckingham Palace garden parties are in the diary on May 16, June 1, and July 4, and Philip will also be expected at the annual Trooping the Colour ceremony on June 17.
On June 27, the royal will visit London Zoo to present the Prince Philip Award for Contributions to Zoology.
On July 12, King Felipe and Queen Letizia of Spain will make a three-day state visit to the UK, for which Philip will be on hand.
According to the Daily Telegraph newspaper, it expected that once the Duke of Edinburgh and his wife go on their annual summer holiday to Balmoral in August, the prince's retirement will begin, though he may still make public appearances in the future.
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