It was a heartwarming family affair as young Prince George, caught on camera, remarked to his mother, Kate Middleton, “they all look so happy,” according to lipreader Juliet Sullivan.
This adorable moment occurred just before George waved to the cheering crowds who had gathered to celebrate King Charles’ birthday.
The day was particularly poignant as it marked The Princess of Wales’ first public appearance in months.
Kate Middleton, aged 42, has been receiving treatment for an undisclosed form of cancer since late February.
Despite her health challenges, the princess was determined to ensure her children could enjoy the family outing to celebrate their grandfather’s special day.
The royal family, resplendent in their finery, made quite the entrance at the event.
Kate’s presence was crucial as it meant her children didn’t have to travel to the palace alone in their carriage.
Later, an endearing exchange was caught between Kate and her youngest, Prince Louis, on a balcony at Horse Guards Parade.
 Louis, ever the curious child, was seen playing with a curtain drawstring and asking his mother, “you know how they make these, ma?”
The event was a joyous spectacle, with King Charles himself seemingly enamored, reportedly exclaiming, “Look at this! Wonderful! So colourful” while riding in the carriage with Queen Camilla.
 Prince William took part in the parade on horseback, his children and wife cheering him on from their carriage.
 Kate’s presence provided a reassuring sight for the young royals, especially during the iconic fly-past from the Buckingham Palace balcony.
 The memory of Prince Louis famously covering his ears to block out the noise in 2022 was fresh in many minds.
 The Princess of Wales, after arriving at Buckingham Palace, stepped out with her family, displaying their elegant outfits.
Her appearance came after she penned a deeply moving personal message to the public, thanking them for their support during her cancer diagnosis.
 Back in March, the princess had disclosed she was undergoing “preventative chemotherapy” for an undisclosed form of cancer.
 Her treatment is ongoing and will last for several more months.
While not ready to return to full-time public duties, Kate revealed she now feels well enough to undertake a limited number of engagements.
To mark her return, Kensington Palace released a stunning new portrait of Kate taken at Windsor by Matt Porteous, capturing her in a reflective mood.
 In her message, Kate expressed her gratitude, saying she was “blown away” by the public’s kind messages of support.
“It really has made the world of difference to William and me and has helped us both through some of the harder times,” she wrote.
She spoke candidly about her progress, acknowledging the fluctuating nature of chemotherapy.
 “As anyone going through chemotherapy will know, there are good days and bad days. On those bad days you feel weak, tired and you have to give in to your body resting,” she shared.
“But on the good days, when you feel stronger, you want to make the most of feeling well.”
Kate added, “My treatment is ongoing and will be for a few more months.”
She spoke about how on days she feels well, she enjoys engaging with school life, spending time on activities that bring her energy and positivity, and starting to do some work from home.
Kate looked forward to attending The King’s Birthday Parade with her family, while acknowledging that she is “not out of the woods yet.”
 The princess is learning patience, especially with the uncertainties of her condition.
“Taking each day as it comes, listening to my body, and allowing myself to take this much-needed time to heal,” she explained.
She extended her heartfelt thanks for the continued understanding and bravery of those who shared their own stories with her.
 The backstory of Kate’s health journey is a testament to her resilience and strength.
She first announced her cancer diagnosis on March 22, in a moving video statement recorded at Windsor.
The news came following serious abdominal surgery in January, which initially did not reveal cancer.
However, post-operative tests later confirmed the presence of cancer, leading to her undergoing preventative chemotherapy.
In her video message, Kate described the diagnosis as a “huge shock” and shared how she and William have been processing it privately for their children’s sake.
 “It has taken us time to explain everything to George, Charlotte, and Louis in a way that is appropriate for them,” she said.
“I am well and getting stronger every day by focusing on the things that will help me heal; in my mind, body, and spirits.”
“I am well and getting stronger every day by focusing on the things that will help me heal; in my mind, body, and spirits.”
Having William by her side has been a great source of comfort and reassurance.
The public’s love, support, and kindness have also been immensely helpful to the royal couple.
Kensington Palace has asked the public not to speculate about the specifics of Kate’s cancer.
When the Princess had abdominal surgery in January, it was stated to be non-cancerous.
The palace confirmed again in March that the initial tests had not shown cancer, but later tests had found it.
A week prior to the event, Kate had apologized for missing a key rehearsal, writing to the Irish Guards, expressing her hope to represent them soon.
This appearance at the King’s Birthday Parade was a significant step for Kate, reflecting her determination and the support she has received.
The royal family’s public unity and Kate’s bravery in the face of her health challenges continue to inspire many, showcasing their enduring strength and resilience.