Prince William, Kate Middleton Choose Sweet Smiling Pic of Prince George for His 6th Birthday Thank-You Notes

Prince William and Kate Middleton sent out thank you cards, featuring a "toothless" Prince George, for those who greeted him on his sixth birthday.

The Duke and Duchess of Cambridge recently made a heartwarming move that made the royals' fans feel honored as they sent out thank you notes to those who greeted their eldest son a happy birthday.

A cute toothless photo of Prince George wearing the official National Soccer Team jersey was used as the cover, while a note from the family was written on the back. The letter read:

"The Duke and Duchess of Cambridge appreciated your kind thought in writing to Prince George on the occasion of his sixth birthday. This was most thoughtful of you and greatly appreciated by Their Royal Highnesses who send you their best wishes."

George's portraits were first released in July, during his birthday. His mother, Kate Middleton, snapped the series of photos, including one of the prince laughing on the grass, and posted them on Instagram with the caption:

"The Duke and Duchess of Cambridge are very pleased to share new photographs of Prince George to mark His Royal Highness's sixth birthday."

An insider revealed that the party would be held in the Kensington Palace and would have an inflatable castle and magician to entertain guests.

Although coming from one of the most famous families and being in line for the throne, George has shown sweetness and adoration for his mother and acts shyer than his siblings.

A source told The Sun of the prince's "favorite things," which include bonding with the duchess, "cooking pizza," and "pottering about in the garden."

During his special day, his parents reportedly organized a celebration for their eldest, which included a party that hosted George's closest classmates and friends.

An insider revealed that the party would be held in the Kensington Palace and would have an inflatable castle and magician to entertain guests.

Caterers were also said to be hired to prepare favorite dishes of the celebrant, including "pizza, pasta, and sliders." A variety of sweets were also made available for the kids.