The young royal, who is the King's niece, is currently studying English at the University of St Andrews in Scotland.
Despite their difference in age, Lady Louise has always enjoyed a close relationship with her older cousins and younger second cousins.
While Lady Louise and her younger brother, James, Earl of Wessex have grown up out of the public eye and are not expected to carry out royal duties in future, they have joined their family at some major royal events over the years.
Lady Louise and James have joined their parents on their public engagements in the past, and we love how this photograph shows the closeness between them and their parents.
While Lady Louise shares her mother's love of sport, it seems she also has a similar sense of humour to her father, judging by their giggles!
Lady Louise shares a lovely bond with her mother, Sophie, and it's clear from way that the Duchess speaks about her daughter.
In an interview with the Times in 2020, the then Countess of Wessex spoke about her Lady Louise's education, saying: "She's working hard and will do A-levels. I hope she goes to university. I wouldn't force her, but if she wants to. She's quite clever!"
Lady Louise's GCSE and A-Level results were not made public but but standard entry requirements to St Andrews are AAA.
Lady Louise is the youngest granddaughter of the late Queen Elizabeth II.
The pair shared a love for equestrian sports and Sophie once revealed the incredible moment that Lady Louise realised who her grandmother was.
In a 2016 interview with the BBC's Louise Minchin, she was asked by the presenter if her children had started to acknowledge that their granny is a highly important public figure.
"It happened a little while ago," said Sophie laughing. "Well for Louise, actually, it was much more of a shock to the system. It was only when she was coming home from school and saying, 'Mummy, people keep on telling me that grandma is the Queen.'
"And I asked her, 'Yes, how does that make you feel? And she said, 'I don't understand.'"
Sophie added: "I don't think she had grasped that perhaps there was only one Queen."
The Prince and Princess of Wales are close to the Duke and Duchess of Edinburgh, and here they are pictured at the Commonwealth Youth Games 2022 in Birmingham.
Lady Louise took Charlotte under her wing when she was a special attendant at Eugenie's wedding, and cameras captured this warm greeting between the pair at the Commonwealth Games.