If he wasn't the heir to the throne, he could have been a baby model!

Prince George celebrates his third birthday today, and what better way to mark the joyous occasion than with a backyard photoshoot! The royal toddler kept it casual in a sweater and shorts as he rode on a swing and played with the family dog Lupo, and we don't think it gets any more adorable than this.

The snapshots were taken by Matt Porteous at the Duke and Duchess of Cambridge's home in Norfolk, England. "I really enjoyed the opportunity to take these photographs of Prince George. It was a very relaxed and enjoyable atmosphere. I'm honored that they have decided to share these images with the public to mark his third birthday," the photographer said in a statement.

Kensington Palace knows how much people love Prince George, and they wanted to share the images with the world.

"The Duke and Duchess thank everyone for all the lovely birthday messages they have received for Prince George. Can’t believe it’s been three years already!" the palace tweeted. "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," they added.

All hail the future king!