'What a fantastic daddy': Prince William delivers Prince George's letter to Santa

Doting daddy Prince William won hearts again after he adorably became Prince George's mailman. During his royal visit to Finland, the Duke of Cambridge personally handed over his son's handwritten letter to Father Christmas at Esplanade Park in Helsinki on Thursday, 30 November.

"My son has been extremely keen to see you. I had to give you this letter," the 35-year-old royal told Santa and was all giggly as he handed over the letter to the man dressed in red wearing a big white beard.

"He hasn't written down many requests. So I think one request is probably okay," William said. A zoom out of the cute letter shows that the young royal circled "nice" and filled only one blank space with a "police car" and left four others empty. He ended his special note by signing his name.

"He's been a nice boy, a nice boy," the Duke of Cambridge, who is expecting his third child with Duchess Kate Middleton, told Father Christmas about his four-year-old tot.

His sweet gesture for his son has melted hearts, with many taking to Instagram to hail William.

"What a fantastic daddy! We bet George was more impressed with William meeting Santa that he was when meeting some heads of state," one royal fan said. "Now that's a great daddy, making sure little George's letter gets to Santa. Adorable," wrote another.

"How Special. When George sees this picture, he will be thrilled with his Daddy who took the letter all the way to where Santa lives! Shows how hard the parents are working to ensure their children are similar to their peers," one fan gushed about the royal couple's parenting skills.

Many were also amazed by little George's writing skills at such a young age.

Earlier, William and Kate had opened up about their parenting skills and revealed that their simple philosophy is to raise their children to speak for themselves.

"Catherine and I are clear that we want both George and Charlotte to grow up feeling able to talk about their emotions and feelings. Over the past year, we have visited a number of schools together where we have been amazed listening to children talk about some quite difficult subjects in a really clear and emotionally articulate way – something most adults would struggle with," William had told Vogue back in April.