If the Duke and Duchess of Sussex decide to have children, a future daughter could make the royal history books.
A centuries-old law which states that only sons can inherit peerages is being challenged in the European Court of Human Rights.
Currently, the outdated rule dictates that only a son can be bestowed with a dukedom meaning that if the newlyweds welcome a daughter in the future, she would not be given a royal title.
The recent challenge to the law was brought about by pressure group, Daughter's Rights. Despite being made up of daughters of peers, they are not permitted to sit in the House of Lords due to the lack of an official title.
Head of the organisation, Charlotte Carew Pole, told : "
It is 100 years since women got the vote and it is outrageous that women still don’t have the right of election to our upper house."
She added, "This is the last state-sanctioned sexual discrimination and it needs to be eradicated from the statute book."
When Prince Louis was born on 23 April 2018, Princess Charlotte made history after becoming the first female member of the royal family to retain her place in line to the throne regardless of gender.
Shortly after the Duke and Duchess of Cambridge tied the knot in 2011, the Succession to the Crown Act ruled that a member of the family's sex could no longer determine their place in the line of succession.