In many countries a King or Queen's daughter has customarily been called a Princess. This is the custom that has been followed by the Monarchs of the United Kingdom for many centuries.
Additionally, in the UK, the title 'Princess Royal' is also conferred on the eldest daughter of the Monarch, provided that no one else (living) already holds that title. (See 'Related Links' below)
However, depending on the country, time period and Royal House, other titles have been used for the daughter of a Queen/King, e.g.
- Imperial Princess
- Imperial Archduchess
- Royal Archduchess
- Grand Duchess