Watching siblings interact as they grow together is one of the joys of parenthood.
Seeing them grow and develop different, and often contrasting, personalities can be the cornerstone of family life. And things are no different if you happen to be a royal, it seems.
A nation has been captivated by the many public appearances of young Windsors Prince George and Princess Charlotte. The Queen's platinum jubilee, in particular, provided the perfect opportunity to chart the youngsters' progress.
