Duchess of Cambridge must curtsey to 'blood princesses'
The Queen has updated the Order of Precedence in the Royal Household to take into account the Duchess of Cambridge's role in the family.
Kate Middleton will have to curtsey to all the blood princesses, especially if Prince William is not alongside her.
Etiquette expert Jean Broke-Smith explained more to BBC Radio 5 live Breakfast.
To listen to other 5 live interviews, please visit the Best Bits page.