The Duke and Duchess of Cambridge pronounced they were “delighted to share” the picture, which shows the toddler wearing a yellow cardigan at their country residence Ammer Hall in Norfolk in April.
The photo’s recover follows a tradition combined by the Cambridges to give the country one picture of any child to symbol their birthdays.
Both William and Kate have always been protecting of their children, clever not to display them too much to the public.
“Their Royal Highnesses would like to appreciate everybody for all of the lovely messages they have received,” they wrote in response to messages from stately fans.
“And wish that everybody enjoys this sketch of Princess Charlotte as much as they do.”
Charlotte was first photographed on 2 May 2015 when the Duchess showed her off in front of dozens of reporters collected outward St Mary’s hospital in London, just 12 hours after giving birth.
Since then, she has occasionally been photographed, appearing only at open engagements with her parents.
She was named Charlotte Elizabeth Diana in reverence to her grandmother Diana, Princess of Wales and her great-grandmother the Queen.