Happy Birthday, Prince George!

Kate Middleton and Prince William, both 34, released four new snapshots of their son in honor of his 3rd birthday on Friday, July 22 — and we can't get over how adorable (and grown up!) Princess Charlotte's older brother looks in the new pics!

"The Duke and Duchess are delighted to share four new photographs of Prince George to mark his third birthday, taken by photographer Matt Porteous at their home in Norfolk in mid-July," read one of the pics' captions.

MUST SEE: Kate Middleton Appears to Have a Baby Bump — Is She Pregnant?

"The Duke and Duchess of Cambridge would like to thank everyone for all the lovely messages they have received for Prince George's 3rd birthday," the caption concluded.

Click through the gallery below to see more of George and Charlotte’s cutest photos!