Princess Kate and Prince William were busy preparing for their son’s arrival in 2013 and even had a nickname for the soon to be Prince George.

Prince William and Princess Kate had an adorable nickname for Prince George before he was born, according to a royal author.

As the future heir to the throne, George has many titles but journalist and royal author Robert Jobson revealed in his 2013 book ‘The New Royal Family: Prince George, William and Kate, The Next Generation’ that he had a different nickname before he was born.

While preparing to give birth to George in July 2013, the Princess of Wales had just completed her final public appearance by wowing crowds at Trooping the Colour before heading on ‘maternity leave’.

William was about to take his paternity leave from the RAF as they prepared to welcome George, who they had nicknamed their ‘little grape’ during Kate’s pregnancy.

Mr Jobson wrote: “The next time we would see her [Princess Kate] – officially at least – would be on the hospital steps with her new baby in her arms and proud husband at her side. There is no doubt the birth of her baby would be her biggest test to date, and, indeed, it would be a crowning moment.

“Prince Charles was considered progressive to want to be at his wife’s side. Like his father, William had followed modern convention by taking two weeks’ paternity leave from the RAF to bond with the baby they have nicknamed ‘our little grape’.