Last week, The Succession To The Crown Act made history. The new law came into force on March 26 and ends 300 years of male entitlement to the British throne. Should the Duke and Duchess of Cambridge have a baby girl, she won't be left out in the line of succession, according to Elle UK.

The act was quickly summoned before Prince George's birth in 2013 to make sure that William and Kate's first baby - even if a girl - would be third in line to the throne.

The law in force now states: "The gender of a person born after 28 October 2011 does not give that person, or that person's descendants, precedence over any other person (whenever born)."

The act also included a few other changes. Deputy Prime Minster Nick Clegg wrote in the House of Commons' announcement: "The Act removes the male bias in the line of succession, ending the system of male heirs automatically inheriting the throne over female heirs and removing this historic discrimination against women. The Act also ends another long-standing piece of discrimination, the bar on anyone who marries a Roman Catholic from becoming monarch, and replaces the outdated Royal Marriages Act 1772 such that only the first 6 in line to the throne need consent of the monarch to marry."

The act was passed in 2013, but required all 16 Commonwealth States to pass legislation for the law to come into effect.

"The Act reflects this Government's emphasis on equality by removing centuries of discrimination on both religious and gender grounds," Clegg concluded in the announcement. "The Act puts in place succession laws that are fit for the 21st century and for a modern constitutional monarchy."