PRINCESS Charlotte stole everyone's hearts this morning when she arrived for her first Christmas Day church service in Sandringham with older brother Prince George.
It marks the Cambridge kids' first time attending the annual Christmas Day service at St Mary Magdalene, Sandringham and royal fans even spotted little Charlotte curtsying to her great grandmother, the Queen.
Four-year-old Charlotte and older brother George, six, joined the Queen at the Royal Family's traditional Christmas Day church service and walked hand-in-hand with parents, Prince William and Kate Middleton.
And fans on Twitter even spotted the adorable princess curtsying to the Queen.
In a video clip, mum Kate can be seen curtsying, before little Charlotte copies as Her Maj leaves the church.
One fan wrote: "Okay but Charlotte's curtsy to the Queen! OMG! So cute!
"Her momma did it first but she did it and she did it like a true Princess! She held her coat and curtsy! So freaking cute!"
Others said the little princess was "so well mannered" while another tweeted: "What a magnificent curtsy it was!"
Many said it had "made their Christmas Day" while some called it the cutest thing ever ".
After the service, Princess Charlotte and Prince George were spotted mingling with members of the public , with the princess even clutching an inflatable pink flamingo.
Charlotte, who was accompanied by mum Kate, was also handed a gift box by a well-wisher.
Gemma Clark, 39, who had travelled from Long Sutton in Lincolnshire with her family, gave Charlotte the inflatable flamingo and said she seemed pleased with the gift.
"She said 'Thank you'," said Ms Clark, who was in a wheelchair.
The flamingo was called Felicity, Ms Clark said, adding: "But Charlotte may call it whatever she likes now."
She said: "It was a birthday present. My sister bought me it for my birthday and I truthfully didn't like it but we have adventures with her."
Another well-wisher presented Charlotte with a home-made doll.
In attending the service, the couple are thought to be breaking from tradition as Sandringham celebrations are a privilege usually reserved for members of the royal family.
The Princess of York and her husband-to-be are expected to marry in June 2020.
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In other royal news, we told you the Queen picks the tree and always has a fiver for the church collection – what Christmas at Sandringham is really like.
We also revealed relatable Kate Middleton browses kids' tights and carries a basket of goodies during last minute Christmas shopping trip.
And we showed you how the Queen didn't visit Prince Philip in hospital as she 'wanted to respect other patients' privacy' , royal expert claims.