The adorable young prince's letter appeared to ask for just one gift this year - a toy police auto.
During the recent royal visit to Finland, Prince William brought along his son's letter and delivered it straight to Santa himself.
Prince George had better have been on his best behaviour this year as he has his heart set on a visit from Father Christmas.
Prince George only had one thing on his list this year.
Father Christmas was pictured reading the four-year-old's handwritten letter before stowing it carefully away.More news: Police, FBI search for 3-year-old North Carolina girl Mariah Woods
The royal appeared to be in good spirits as he wandered the stalls of the student-driven event, testing out the latest tech on display. William's official two-day trip to Finland in celebration of the country's 100th anniversary of Independence came just days after the engagement of his younger brother, Prince Harry, to American actress Meghan Markle.
"I've seen you and I had to give you this letter", William said to St. Nick.
The proud dad pointed out that George had circled "nice" and pleaded his son's case, saying: "He's been a nice boy, a nice boy".
Before meeting Father Christmas, William went on a walkabout in a nearby park, greeting hundreds of well-wishers who braved freezing conditions. 'He hasn't written down many requests, so I think one request is probably OK'. "He's been scrounging off my food the last few years".