New photos of the royals show the differences between Louis and George.
The children are only young now but one day they'll carry out work for grandpa Charles.
The Cambridge children were able to ask questions of the veteran TV broadcaster, who they are big fans of.
Kate made the comments while speaking to families involved in BBC project, Tiny Happy People.
Prince Louis wore a navy blue jumper with a car emblem on the front on his second birthday.
The young royal has drawn comparisons with his own siblings as well as his grandparents and his uncle.
Charles has shared a picture of him hugging one of his youngest grandchildren to mark the birthday.
The Duchess of Cambridge captured what happened in reality when she took her son's birthday photos.
The young royal has already been seen on the Buckingham Palace balcony, working on his wave.
Louis joins other children in creating a rainbow for the NHS in new photos.
The couple released further details, some of which were "saddening."
Prince William and Duchess Kate have always enjoyed a bit of healthy competition.
Their Christmas card was shared on Twitter by Air Commodore Dawn McCafferty
The Duchess of Cambridge says the 19-month-old is "fascinated" by the former Bake Off judge.
Prepare for a cuteness overload.
Here’s a closer look inside the school fit for the Royal family.
The Cambridge children hadn't met their baby cousin until that moment, according to one royal expert.
The Duke and Duchess of Cambridge’s three children met baby Archie for the first time when William and Harry played at the King Power Royal Charity Polo Day, it has been revealed. The Sun’s royal correspondent Emily Andrews tells Yahoo UK’s ‘The Royal Box:' "It was interesting actually that polo match because it was the first time that Charlotte and George had actually met Archie, they hadn’t actually met him for two months, so that polo match was lovely." Prince George, then five, Princess Charlotte, four, and one-year-old Prince Louis were spotted playing together on the sidelines, as Kate and Meghan, holding their two-month-old cousin, stood side by side.
Royal fans praised the adorable choice of photo.
“You go back a couple of generations and it was literally like waxworks coming out, it was very stiff and there wasn’t much hands-on parenting at all.”
Within hours of Prince Louis' 1st birthday pictures being released, his £35 blue dog jumper had completely sold out.
The royal siblings are the image of each other.
More bets have been placed on baby Sussex than any other royal tot in history.
April and May are popular months for royal births.
Kate was chatting with other mums at a Children's Centre in London.