Despite ensuring the birthday was a low-key affair, the royal couple did delight fans by releasing a series of new photograph of Prince George, to mark the special occasion.
“The Duke and Duchess of Cambridge are delighted to share four new photographs of Prince George to mark his third birthday,” read the caption on Instagram.
“They were taken by photographer Matt Porteous at their home in Norfolk in mid-July.”
A spokesman for Kensington Palace added: "The Duke and Duchess hope that people will enjoy seeing these new photographs. They would like to thank everyone for all the lovely messages they have received as Prince George celebrates his third birthday."
Photographer Matt Porteous said of taking the photographs: "I really enjoyed the opportunity to take these photographs of Prince George. It was a very relaxed and enjoyable atmosphere. I'm honoured that they have decided to share these images with the public to mark his third birthday."