Charlotte helped her parents make fresh pasta which they delivered to vulnerable people near their Norfolk home.
The Duchess of Cambridge said she kept up the routine of school during the Easter holidays with her kids.
The Duke of Cambridge wanted to familiarise his eldest two children with the layout.
Four-year-old Princess Charlotte has started school at Thomas's Battersea.
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.
The Duchess of Cambridge made the confession to a young royal fan in Keswick, Cumbria.