Prince Wililiam delivered an emotional tribute to his mum on what would have been her 61st birthday (01.06.22).
Every year 'The Diana Award' is given to youth ages 9-25 in honour of social action or humanitarian work.
The prince spoke of Princess Diana's legacy in a letter written to the awardees of 'The Diana Award'.
"Congratulations on receiving The Diana Award today! You are part of an inspirational generation of young people who are changing the world through your actions, and I hugely admire your efforts," Prince William wrote in the letter.
Duke of Cambridge called award recipients "the personification of my mother's legacy'.
"I know she would be so proud of you all" he said.
"I believe there's no better way to celebrate her life and work than through recognising incredible people who dedicate so much time and effort to helping those around them," he added.
Princess Diana passed away tragically in a car accident in 1997, and this year marks 25 years since her passing.
Prince Harry honoured his mum via the July 1 virtual ceremony in which 'The Princess Diana honorees were honoured.
"Today, we're reflecting on what would have been my mother's 61st birthday. And this year is also 25 years since her passing. There isn't a day during the past two and half decades where I haven't thought about the mark she left not only on me and my brother, but on all of our lives," Prince Harry said.
"I see her legacy in all of you. I see her legacy in a Diana Award community that spans multiple generations. I see her legacy every time I meet with families, young people, and children from all corners of the world" he added.
My mother instilled in me, and in all of us, a drive to speak up and fight for a better world. And now, as a husband and a parent, my mother's voice is even stronger in my life," he continued.
"All of you have helped keep her voice alive by showing the world how each small action counts, how kindness is still valued, and how our world can be better if we choose to make it so" he added.