“They were taken by The Duchess in April at their home in Norfolk.
“The Duke and Duchess are very happy to be able to share these important family moments and hope that everyone enjoys these lovely photos as much as they do.”
Charlotte was first introduced to the public on the day of her birth, May 2 2015, and the first photos of the tiny little girl were captured by the world’s media.
Named Charlotte Elizabeth Diana after her grandmother and great-grandmother, the Royal princess has since only been seen in a handful of snaps marking big events – until now.
To celebrate their Princess Charlotte’s big day, the Duke and Duchess of Cambridge are expected to spend the day at their country home Anmer Hall with their daughter and son Prince George, along with close friends and family.
When Prince George turned one in 2014, it is believed Kate’s mum Carole Middleton hosted a Peter Rabbit-themed party at the Middleton family home in Berkshire.