Princess Anne has previously revealed a hilarious nickname that she has for King Charles. The 75-year-old is known to share a close relationship with her older brother, who is less than two years older than her.
Their close bond has often been displayed through many public moments, but in particular during a documentary which aired in 2023. During the documentary, titled Charles III: The Coronation Year, Anne can be see greeting her brother at Buckingham Palace shortly after his coronation ceremony. In an endearing moment between the siblings, she appeared to tell the King: "Hello, Old Bean."
The nickname was seemingly met in good humour by the King, who appeared to burst out laughing.
He then greeted his younger sister by kissing her hand.
Although they are known for typically adhering to formality, the sweet exchange gave fans a glimpse at what the family members are like behind doors.
Speaking previously on The Telegraph's Royal Insight YouTube series, the publication's royal editor Hannah Furniss discussed the "lovely moment".

Hannah described Charles and Anne as having a "very warm relationship", adding that the Princess is a key part of her brother's inner circle.
She added: "She is probably in a better position than anyone to give him advice, give him a bit of sympathy when he needs it, give him a bit of a pep talk.
"She understands how the Royal Family works and she has a bit of an eye to the past and to the future."
You may also like
Union Minister Kiren Rijiju visits flood-affected areas in Darjeeling, urges WB govt to "step up" relief measures
Kindle Scribe that makes it easy to take notes at work or uni is slashed by £132
Now Buy A Maruti Car With Just ₹1,999 Monthly EMI, New Scheme Targets First-Time Buyers After GST Price Cuts
Byker Grove legend joins Coronation Street role in dark Todd Grimshaw storylin
Liverpool sent 'impossible' Trent Alexander-Arnold claim after Steven Gerrard's verdict