Kate and William sent this personalised thank you card to those involved with their tour of Australia and New Zealand earlier this year.
The photo, which shows gorgeous George happily smiling with his proud parents, was taken by photographer Jason Bell.
Although the photo was part of an official set released to the media in March, it has not been seen before now.
The card showing the family photo and the couple's signatures was shared online by various websites and social media accounts, prompting Kensington Palace to confirm its authenticity.
A spokesperson told Mail Online: "I can confirm it is a photo the Duke and Duchess used as official gifts on their tour to New Zealand and Australia. It was taken by Jason Bell before the tour."
It is not to known who owns this particular thank you card.
Kate and William's tour proved a huge success for the family, with lots of lovely photo opportunities for the couple and George, including a playdate with nursery children and a visit to a local zoo.
George celebrated his first birthday in July, two months before The Duke and Duchess announced they were expecting their second baby.
Kate had several weeks away from the limelight while suffering from hyperemesis gravidarum, before officials announced she was heading back to royal duties and that she was due to give birth in April.
More on Parentdish: