In a deeply touching revelation that tugs at the heartstrings of royal fans worldwide, it’s been shared that Prince William’s children—Prince George, Princess Charlotte, and Prince Louis—uphold a poignant annual tradition of writing letters to their late grandmother, Princess Diana, every Mother’s Day. This emotional ritual, aimed at honoring the People’s Princess and comforting their father, came into the public eye through heartfelt cards crafted by the young royals, with one particularly moving message from Charlotte noting, “Papa is missing you.” As the family navigates the demands of royal life in 2025, this custom underscores the enduring legacy of Diana and the close-knit bonds within the Wales household.

Mother’s Day in the UK, known as Mothering Sunday, falls on the fourth Sunday of Lent, typically in March. For the Cambridges, it’s a day not just of celebration but of quiet remembrance. According to insights from palace sources, each year the children sit down to create personalized cards for “Granny Diana,” whom they never met but know through stories, photos, and the profound impact she left on their father. Prince William, who lost his mother in a tragic car accident in 1997 at age 15, has openly spoken about keeping her memory alive for his kids. This tradition helps bridge the gap, allowing George (12), Charlotte (10), and Louis (7) to express love and thoughts to a grandmother they’ve only imagined.

The cards themselves are a blend of innocence and sincerity. In one shared example, Prince George penned: “Dear Granny Diana, Happy happy Mother’s Day. I love you very much and think of you always. Sending lots of love from George.” Princess Charlotte’s note added a layer of empathy: “Dear Granny Diana, I am thinking of you on Mother’s Day. I love you very much. Papa is missing you. Lots of love, Charlotte.” Little Prince Louis contributed with colorful drawings, hearts, and stickers, his card simply wishing “Happy Mother’s Day” in a child’s scrawl. These handmade tokens, often adorned with glitter, crayons, and personal touches, are made for William, serving as a balm for his ongoing grief amid his duties as heir to the throne.

This practice aligns with William and Kate’s parenting philosophy, which emphasizes emotional openness and family values—echoing Diana’s own approach to raising her sons with humility and compassion. The Princess of Wales has often highlighted mental health and the importance of discussing loss, themes William champions through initiatives like Heads Together. In 2025, a year marked by Kate’s triumphant recovery from cancer and the family’s increased public engagements, such traditions take on added significance. They provide a private anchor amid the spotlight, reminding the children of their heritage while fostering resilience.

The royal family’s holiday season, including the recent Christmas walk at Sandringham, has showcased their unity. Yet, this Mother’s Day ritual reveals a more intimate side, humanizing the monarchy. Fans speculate it might extend to other occasions, like Diana’s birthday or the anniversary of her passing, though details remain guarded. William has shared in interviews how he talks to his children about Diana’s kindness, her charity work, and her fun-loving spirit, ensuring her influence endures.

As global interest in the royals peaks with ongoing documentaries and books about Diana, this tradition resonates deeply. It highlights how, nearly three decades after her death, Diana’s presence lingers in the hearts of her grandchildren. For William, receiving these letters each year is a bittersweet gift, blending sorrow with the joy of seeing his mother’s legacy live on through the next generation. In an era of change for the monarchy, such personal gestures reinforce the emotional core that keeps the family grounded and relatable.