William & Kate's family photo breaks the internet with cuteness

The royal family often responds to messages from fans.

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William and Kate sent a response to a fan account's Christmas message.

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They included a photo of themselves with their children.

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[{"selector":"#anim-1dbab627-be3d-470a-8122-731292e16166 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(-3.552713678800501e-15%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-bb47c9b9-1a73-4dd3-ab94-c2a262c4709b","keyframes":{"opacity":[1,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-eb49a696-e9bf-4504-8fef-8c67e960f64d","keyframes":{"transform":["scale(3)","scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] The message thanked the fan and wished them a happy new year.

The Wales' appearance at Sandringham was poignant for the family.

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[{"selector":"#anim-5064fd1d-e257-4526-88de-b69f353344ce [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-b2da2dae-94d2-4f10-85c7-b3452442f43e","keyframes":{"opacity":[1,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-fd8c782f-2236-486d-8343-5eae0aa15cff","keyframes":{"transform":["scale(3)","scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] The Christmas Day walkabout tradition began in 1988.

[{"selector":"#anim-af647a7e-71ce-45d0-b9c7-d5b1033baba0 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-c27d60a7-95a0-4cc9-a584-12c75a427429","keyframes":{"opacity":[1,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-aebc5600-7c1a-461f-898c-f289b3259751","keyframes":{"transform":["scale(3)","scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Prince William and Kate took Charlotte to the service when she was a toddler.

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[{"selector":"#anim-902a65ab-4621-4184-856c-c59706c7a9aa [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-a7d260e1-85c3-463b-b3af-63fd3f372b4b","keyframes":{"opacity":[1,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-29f36232-d1d4-4594-b97f-bed96d5681d5","keyframes":{"transform":["scale(3)","scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Louis was on his best behavior at Sandringham, holding his mum's hand.