The 35-year-old prince, who became a first time father in May this year, was speaking at the 2019 WellChild Awards when he was overcome with emotion.
The charity, for which the Duke of Sussex is a patron, helps seriously ill children spend time out of hospital and return home to be with their families.
"It has been over a decade since I first came to these awards and every year they never fail to surprise and inspire me, yet this year it resonates in a different way because I'm a father," started Prince Harry.
"Last year," the royal continued before audibly choking up, finally finishing "last year my wife and I attended we knew we were expecting our first child."
Harry continued "No one else did at the time, and I remember..." before breaking down in tears and being forced to pause his speech.
Comforted by awards co-host Gaby Roslin and encouraged by applause by the audience, Harry continued: "And I remember squeezing Meghan's hand so tight during the awards, both of us thinking what it would be like to be parents one day, and more so, what it would be like to do everything we could to protect and help our child should they be born with immediate challenges or become unwell over time.
"And now, as parents, being here and speaking to all of you pulls at my heart strings in a way I could have never understood until I had a child of my own."
We're not crying, you're crying.
The Duke and Duchess of Sussex welcomed baby Archie Harrison Mountbatten-Windsor on the 6th May 2019.
Now five-months old, baby Archie joined mum and dad on their ten-day tour of South Africa where he was introduced to Archbishop Desmond Tutu at his legacy foundation in Cape Town.
Featured Image Credit: PA
Chosen for YouChosen for You
Most Read StoriesMost Read