Like people all over the world, Prince Harry will never forget August 31, 1997.
Princess Diana, the People's Princess, was tragically killed in a car accident, a moment that left royal watchers, and royals themselves heartbroken, devastated and speechless.
A lot has happened 23 years on, but for Diana's son Harry, one thing will always remain the same when it comes to remembering his mum.
New images of Prince Harry and his wife Duchess Meghan have surfaced overnight showing the unique way they marked the Princess's 23rd anniversary since her passing.
The pair joined students and teachers at the Preschool Learning Center, which is based in their new home city of Los Angeles, where they planted flowers with the children.
The flowers in question? Beautiful Forget-Me-Nots.
There's a very good reason for the specific choice of flower.
Forget-Me-Nots were known to be Princess Diana's favourite flower, and the Forget-Me -Not theme has rung true for Harry for many years when it comes to subtle touches and gestures he's made in memory of his late mother.
In fact, at Harry and Meghan's 2018 wedding, the Prince famously picked flowers for Meghan's bouquet himself, and lo and behold, there were those uncanny Forget-Me-Nots - a sweet way to remember Diana in one of the moments he surely missed her most.
A year later, the pair also included a bed of Forget-Me-Nots in a Mother's Day tribute post, which included an image of Meghan's hands holding Archie's feet, posted on their now inactive Sussex Royal account.
Back to present day, it's no wonder the pair's flowers of choice to plant with the children on August 31 2020 was the humble Forget-Me-Not.
The pictures were shared via the Assistance League of Los Angeles, and featured Harry and Meghan getting stuck into several flower beds with the young children.
Ever stylish, Meghan was seen wearing a signature denim shirt and jeans, with her hair tied back in a low-key chic bun.
The perfect casual ensemble for getting hands-on in the garden.
Prince William and Duchess Catherine also likely marked the day in their own, low-key way.
The pair are understood to be remaining at their country residence of Anmer Hall, in the UK's Norfolk, with their three young children in tow.
Who knows, it's highly likely there might be a bed of Forget-Me-Nots sitting in the Cambridge's back yard too - Diana's presence ever felt.