Princess Diana's brother breaks his silence regarding the birth of Duchess Kate's 3rd baby

Charles Spencer, the younger brother of the late Diana, used social media to post a sweet message aimed at the new member of the British Royal Family.

According to Mirror, Princess Diana's brother posted a sweet message on Twitter after Kate Middleton gave birth to his great-nephew.

The author retweeted a post from Kensington Palace which showed Prince George and Princess Charlotte accompanied by Prince William.

The images showed the two young royals and Prince William arriving at the Lindo Wing at St Mary’s Hospital to meet their new brother. 'Very sweet!' Charles captioned.

According to Express, Spencer always seemed to have a strong bond with William and Harry although his relationship with some members of the Royal Family is strained after Diana's death.

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Charles will soon be introduced to Prince William and Kate's third child, but members of the immediate family are already visiting the Duke and Duchess and their new baby at their home in Kensington Palace.

Kate's sister Pippa Middleton was the first visitor who was seen leaving the palace on Tuesday, after meeting the newest member of the British Royal Family.

Her mother, Carole Middleton, who lives in Bucklebury, Berkshire, was also pictured in London and is expected to pay a visit sooner than later.

The Queen, who's currently 92 years old, is still at Windsor Castle with the Duke of Edinburgh who's recovering from a hip operation.

In a statement made on Tuesday afternoon, Prince Charles explained that he and Camilla, the Duchess of Cornwall, are both pleased with the news.

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"We are both so pleased with the news. It is a great joy to have another grandchild, the only trouble is I don't know how I am going to keep up with them," he said.

The newborn's name hasn't been revealed yet, as William and Kate want to share the name with the Queen and the rest of their family before making it public.