All eyes were on Prince George and Princess Charlotte as they accompanied their parents to the Royal Family's traditional church service this Easter.
It was the first time that the Duke and Duchess of Cambridge had brought their children to the service at St George's Chapel in Windsor - making it a historic first for the youngsters.
But it appears it was even more of a historic moment for eight-year-old George, according to a body language expert.
On the way to the church, George was seen for one of the very first times during a public event not holding the hands of either his mum Kate or dad Prince William.
And according to body language expert Judi James, it appeared to be a conscious yet loving decision on his parents' part to make him appear more independent and grown-up - even if it might have been emotional for them.
Judi told the Mirror: "The most powerful and historic non-verbal signal here is, without doubt, the lovingly performed ‘conscious uncoupling’ between William and his chip-off-the-block son George.
"This was the first time we have really seen George walking between his parents as an independent royal. Normally he will automatically and very sweetly hold his father’s hand but here it looks like a conscious decision for him to appear more grown-up.
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"It’s Charlotte holding her father’s hand while George walks between his parents with his arms swinging freely. The clue to the fact that this is a deliberate body language up-grade comes from the way William holds his free arm crooked so there are no hands dangling together between them.
"It looks like a wonderful decision of both trust and love from Kate and William, who could easily extend the hand-holding to enable them to keep charge of any naughty behaviour.
"Instead they appear to limit their ‘checking’ rituals with George to some gently touches of encouragement on the back and one very fond hair stroke from William.
"This could easily have been quite an emotional moment for Kate and William, watching their eldest son not only dress like his father but mirror his father’s body language but without the constant touch of the hand-hold that signals childhood."
So why did William and Kate choose this event to not hold George's hand? Well, according to Judi, it might have been down to fellow younger royal Mia Tindall.
Mia was also attending the service for the first time with her parents Zara and Mike Tindall.
Judi explained: "Looking behind George we can see another possible reason for this timely decision: following close in his wake is little Mia with her parents Zara and Mike.
"Mia also walks hand-hold free and with her arms swinging in a gesture of happy confidence.
"At one point she even overtakes her parents to get to the entrance of the church before they do, meaning a rather shy-looking George might have welcomed the chance to do the same, rather than be outdone by his cousin."
However, after the service, royal fans spotted a sweet moment involving George's younger sister Charlotte.
As the family said goodbye to the Dean of Windsor, the Right Rev David Conner, George joined his parents to chat and shake hands but Charlotte appeared ready to go home.
S he was spotted sneakily tugging on the back of her mum's coat to let her know she was ready to make a speedy exit.
And Judi says even though Charlotte appeared like any other kid in this moment - her solid manners were still on display.
She explained: "Anyone watching Charlotte’s behaviour after the service will remember those feelings of impatience and boredom when your parents stop to chat in the street. Her intentional gesture of facing in the direction of travel makes it clear where she wants to be and that tap on her mother’s leg lets her know, too.
"Kate’s expression of mild surprise is hilarious and her assumption that Charlotte is asking to hold hands is totally wrong as Charlotte refuses the hand when it is offered.
"The subtlety of this ritual suggests pretty solid training in manners for the Cambridge children, though.
"For most non-royal kids this is a scenario that would usually escalate quite quickly to sulks and verbal demands."
