Three looks adorable on Prince George! On Friday, Kensington Palace celebrated Kate Middleton and Prince William’s first-born son’s birthday with the release of some precious new photos.

The pics were recently taken by photographer Matt Porteous at the Duke and Duchess’ family home in Norfolk. They feature HRH in a series of smart outfits, including a striped sweater with a blue whale and a striped top with navy shorts.

In one sweet photo, Prince George is petting the family’s dog, Lupo, while outside on top of a blanket.

A representative from Kensington Palace tells ET that the royal family will be honoring Prince George’s birthday privately. A source tells ET that the family will be celebrating at Anmer Hall in Norfolk.

“The Duke and Duchess thank everyone for all the lovely birthday messages they have received for Prince George,” the Palace said in a tweet.

George and his younger sister, Princess Charlotte, have grown up right before the public’s eyes. And it’s certainly been a treat to watch.

Last year for George's birthday, we narrowed it down to his two cutest photos ever, but for his third, we had to open it up, simply because there's been too many great moments to share!

Here are 11 times the regal little guy was just too darn adorable.

PICS: Prince William and Kate Middleton: A Royal Family Photo Album

1. When he was introduced to us.

Who can forget where it all began? On July 23, 2013, Kate and William held their newborn son in their arms as they left the Lindo Wing of St. Mary's Hospital in London, effectively introducing the world to the new royal baby.

2. When he was adorably fussy at his little sister's christening.

While he eventually got it together like the awesome big brother he is, the young prince did bring on the tears a little bit on the day of Charlotte's christening! But as the pic proves, even when he's pouty, Prince George is perfect.

3. When he hit year two with a big old smile.

He may have his moments, but while gearing up for his second birthday, George was caught totally cheesing the camera!

WATCH: Prince George and Princess Charlotte Play in the Snow for First Time During Family Ski Trip

4. When he was the king of Christmas photos.

Say what you will about Prince George, you have to admit he's a natural at posing for the holiday card!

5. When he got an aeronautical lesson with mom and dad.

Another time where the young prince had a sweet tantrum, George still looked clearly engaged while looking at the helicopters. We may have a future pilot on our hands!

6. When he met President Barack Obama and first lady Michelle Obama in a robe...

Talk about being comfortable around a world leader! George welcomed Barack and Michelle into his home like they were old buddies!

MORE: Watch Prince William Getting Scolded by the Queen Over and Over and Over Again

7. But was more concerned with his rocking horse.

Clearly, the future king enjoys his horse, which was a gift from the Obamas when George was born.

8. When he was a total show-stealer at Queen Elizabeth's 90th birthday photo shoot.

What better companion for the Queen at 90 was there than the Prince at two??

9. When he showed us his best emoji face at the Trooping the Colour Ceremony.

OK. Tongue out emoji face while looking out the window may go down as Prince George's most iconic childhood photo.

PHOTOS: Prince George Continues to Be the Most Adorable Royal Baby

10. When he held his younger sister, Charlotte, for the first time.

You have to admit, there was no better way to meet Princess Charlotte in June 2015, than in the arms of her big brother. So sweet!

11. And hasn't stopped watching over her since!

Clearly, the little guy has got this whole royal thing down pat.

WATCH: Prince George Poses for the Most Adorable Royal Family Portrait

Happy birthday, Prince George! Thanks for winning our hearts again and again!

Watch the video below to see more of Prince George's sweet, fussy moment at the Royal Air Show.

Related Gallery

Prince George's Most Adorable Moments