Princess Charlotte, 4, is set to go to school on September 5 and her sibling George, 6, couldn't be happier.
A source told People magazine: "She can't wait to be with George at big school. She is so excited about it all. They are close in age, and they spend so much time together. Playdates [with outsiders] can be tricky, so they learn to lean on each other."
Meanwhile, a source previously claimed George is quite "reserved".
An insider said: "George is more reserved, and Charlotte is more outgoing. Maybe it's because he's the heir and one day he might be King.