A baby’s gender is a secret.
In the British royal family, it is strictly forbidden to announce the gender of a baby before he or she is born. The public likes to guess and make bets though, which is why they pay special attention to the duchess’s outfits and to their color in particular.
The royal family walk and are seated in a special order. This is why the husband of Queen Elizabeth II cannot walk with her and is always a little behind her. There is also a special order when seated: Queen Elizabeth II, the Duke of Edinburgh, the Prince of Wales and the Duchess of Cornwall (Prince Charles and his wife, Camilla), the Duke and Duchess of Cambridge (Prince William and Kate Middleton), and so on.