However, this title is currently held by the Queen’s second son, Prince Andrew, 60.
For Louis to receive the title, his father must have taken the throne and the title will have to no longer belong to Andrew.
But although Princess Charlotte won’t be entitled to a dukedom, she is eligible for other senior royal titles.
In particular, Princess Charlotte is expected to become Princess Royal when her father takes the throne.
The title is historically given to the monarch’s eldest daughter.