Prince Charles blew his daughter-in-law the Duchess of Cambridge a kiss as they arrived at a service of thanksgiving to mark the Queen's Platinum Jubilee.
The Prince of Wales and Kate were among the last to arrive at St Paul's Cathedral for Friday's event, joining other members of the royal family including Meghan Markle and Prince Harry.
Before they took part in the procession to take their seats, Charles, Camilla, Kate and William greeted each other by the front doors.
As they walked towards each other, Charles was seen blowing Kate a quick kiss, to the delight of royal fans.
They then exchanged a few words before walking to take their seats in the front row. Other members of the royal family, including Meghan, Harry, Mike and Zara Tindall, the Wessexes and Princesses Beatrice and Eugenie sat in the row behind.
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Viewers took to social media to share their delight at the sweet moment.
One wrote: "The loudest cheers for the Cambridges. Charles blows Catherine a kiss when they greet each other. He always lights up when he sees her. The daughter he always wanted."
Another added: "Both Prince Charles and Camilla blew kisses for Kate. My heart melted."
Kate looked stunning in a yellow coat dress by Emilia Wickstead and a Philip Treacy hat.
The Duchess of Cornwall wore an ivory and gold embroidered coat dress by Fiona Clare teamed with a by Philip Treacy hat.
The Queen was due to attend the service but pulled out last night after the first day of Jubilee engagements left her in pain following her recent health issues.
However she was kept firmly in everyone's minds, especially when the Archbishop of York referred to the Queen’s love of horse racing.
The Earl and Countess of Wessex smiled at the comment while the Princess Royal nodded her head in approval.
The Most Rev Stephen Cottrell told the congregation: “I don’t have any great tips for the Derby tomorrow, but since the scriptures describe life as a race set before us, let me observe that her long reign reflects the distance of Aintree more than the sprints of Epsom.
“Certainly, less dressage than most people imagine.
“But with endurance, through times of change and challenge, joy and sorrow, she continues to offer herself in the service of our country and the commonwealth.
“Your Majesty, we’re sorry you’re not with us this morning in person, but you are still in the saddle. And we are all glad that there is still more to come.”