Prince Harry and Meghan Markle aren't the only ones who are involved in a row over their titles - as it's never been clear what their children will be called.
Archie and Lilibet were not given HRH titles at birth due to their position in the line of succession, but now formal discussions have taken place and a change has been made.
With the announcement that one-year-old Lilibet has been christened, a spokesperson for Harry and Meghan officially used the 'princess' title.
