Cambridge's eldest daughters' calendars are about to get even busier! According to Us Weekly (opens in new tab), Prince George, 7, and Princess Charlotte, 5, are going to spend a lot of time next year on a most unusual extracurricular activity: they are going to spend more time with their parents, Kate Middleton and Prince William, and intend to attend more royal functions.

"William and Kate love watching Prince George and Princess Charlotte grow and develop over the past year," an inside source told the magazine." They have both grown so much and have become little people rather than children." As a result, the source said, the Cambridges "hope to be able to take their children to royal functions" in 2021.

As for Prince Louis, he is only 2 years old, a bit too young to cut ribbons and converse with the public.

Last month, another source shed light on the character of the Cambridge children, telling Us Weekly (opens in new tab) that George, the heir to the throne, is probably the most sensible of them all. 'George is well-behaved. Like all children, Charlotte and Louis have a sassy side. Louis is more like Charlotte in personality than George!" the source revealed.

The two eldest sons already have several hobbies, which may need to be swapped if they are to attend more royal functions next year. George is into helicopters, airplanes, and marine biology." George is obsessed with helicopters, airplanes, and marine biology, and he can't wait to be old enough to dive," the source said. 'Charlotte loves gymnastics and has recently started kids yoga. Lots of other kids at school are doing it, and she's teaching Louis down dog and tree pose!" the source said.