Hollie Robinson-Marsh met Princess Diana when she was just four years old [PA/BPM]
Hollie Robinson-Marsh, from Harrow, was one of the last children to see the Princess during her final royal engagement in the UK before her death in August 1997.
The popular charity worker was just four-years-old when she first diagnosed with leukaemia and began treatment at the Northwick Park Hospital in Harrow, north London.
It was here that she posed for a photograph with the Princess - a picture which later became the official photo for Diana\'s GBP5 Memorial Coin.
In the heart-warming picture, a young Hollie can be seen laughing and smiling as she spends some quality time with the Princess - who was at the hospital to lay the foundation stone for the new children\'s ambulatory care centre.
Devastatingly, on her 21st birthday, Hollie was told the crushing news that her cancer had returned.
She died on September 13 - but her family have praised her for always striving to live her life to the fullest.
Her mother Claire Robinson said: "She beat cancer for 17 years and then it came back on her birthday.
Hollie was told that her cancer had returned on her 21st birthday [BPM]
"Her doctor said it was a one in two million chance that it would come back after all of those years.
"She just wanted to get rid of it and get on with her life. She wanted her life back."
Hollie\'s funeral was held last Friday at Breakspear Crematorium in Ruislip and was attended by hundreds of her friends.
Those close to her have continued to remember the "quick-witted" and "funny" girl by sharing their fond memories of her on Facebook.
"She had such strong opinions and beliefs that she had a real presence and everyone knew about it," her mother said.
"Lots of her friends agreed - it was Hollie\'s world and if you didn\'t like it, that was your problem."
Her aunt, Corrine Robinson, praised her brave niece for not crying "a single tear" - but admitted that the hardest thing for Hollie was losing her long, curly hair.
Princess Diana was well-known for her charity work [GETTY]
"She never wanted people to know she was ill really.
"She never said \'I\'m in pain, I don\'t want to do it anymore\', nothing like that.
"If you were with her in hospital and got upset she would tell you to go home. She was so strong throughout."
After beating cancer the first time, Hollie did lots of fundraising for the charity Children with Leukaemia and started working with children and young people with emotional, social, behavioural and learning difficulties - including autism and ADHD - at Kids Can Achieve, based in Harrow Weald.
Her aunt added: "She loved those children and she was so good with them - she never had any patience for us but she had so much patience with them."
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