Royal fans spotted an adorable blink and you'll miss it moment between Princess Charlotte and Princess Beatrice at Prince Philip's memorial service earlier this week.
It came during a hymn in the service when Charlotte locked eyes with her dad's cousin prompting Beatrice to break out in a wide grin.
Charlotte then smiled back at her relative and royal fans were unable to hide their delight at the cute exchange.
It came after Beatrice, a granddaughter of the Queen, was seen breaking down in tears moments after Her Majesty entered the Abbey with a walking stick and on the arm of Prince Andrew.
The older York sister at first tried to hide her face with her order of service before searching in her bag for a tissue while being comforted by her husband Edoardo Mapelli Mozzi.
And according to body language expert Judi James, Beatrice and Charlotte's sweet exchange could have been prompted by the older royal's tears.
She told the Mirror: "Judging from the strength of her tears it is possible she might have been heard sobbing, and this could have prompted little Charlotte to turn to see if she was OK.
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"Children can be very tuned into adult emotions and also lack the adult skills of ignoring displays out of politeness.
"Beatrice’s response was a lightning smile, i.e. one that flashed up quickly, in what could have been a desire to reassure Charlotte that she was OK."
However, it wasn't the only adorable reaction that royal fans noticed from Charlotte.
As the event took place at Westminster Abbey and TV screen were dotted around the building to ensure everyone attending could watch proceedings.
While gazing around the enormous landmark, cameras picked up Charlotte noticing herself on the TV screens as she sat alongside mum Kate.
Footage shows the young princess jumping up in her seat after spotting herself and pulling a wry smile.
The moment was spotted by royal fan Twitter account @RoyalReporterUK - and others couldn't help but comment on her sweet response.
One wrote: "Princess Charlotte is so cute!"
While another said: "Oh that's just adorable."
Meanwhile one added: "You can't help but smile when you see this."
