On the occassion of the christening of his little sister Princess Charlotte two weeks ago, a two-year-old Prince George very nearly stole the show.

Looking as cute-as-a-button in a red and white smock designed by Rachel Riley (the €100 piece inevitably sold out within 24 hours) he waved to the crowds, chatted to his great-granny, peered lovingly into Charlotte's pram, and generally proved that he's going to be a serious heart-breaker in another couple of decades. 

Understandably, the accompanying snaps of the day which were released by the British royals after the event, prompted oodles of ooos and aaas from around the globe. 

Taken by the famed Mario Testino, they showed Kate, 33, and Wills, also 33, with their prince and princess in a variety of casual and natural poses.

But if we assumed that we'd been given our fill of gorgeous shots of the picture-perfect Cambridges – how wrong we were!

For Mr Testino himself took to Facebook this afternoon to add to the collection.

The image shows a proud-as-punch Prince William holding on tight to his son as George leans in towards the lens, peering at the camera with his big, brown eyes. 

His lovely mop of blond tresses are swept away from his face, and he shows off a mouthful of white teeth too.

The toddler turns two tomorrow – with a party being thrown for him at his family's rural abode, Amner Hall. 

Peru-native Mario even wished the little royal a happy birthday in the accompanying caption. "The Duke Of Cambridge with his son Prince George, who turns two years old tomorrow," he wrote in both English and his native Spanish.

This photograph captures a very happy moment on what was a special day for The Duke and Duchess and their family. They are very pleased to share this picture as they celebrate Prince George's second birthday.

Kensington Palace said today in a statement: "The photograph shows The Duke of Cambridge holding Prince George in the gardens at Sandringham House.

We'll be sharing a special photo of Prince George later ahead of his birthday tomorrow. Watch this space! #HappyBirthdayPrinceGeorge

— Kensington Palace (@KensingtonRoyal) July 21, 2015

"It was part of the series of official photographs taken by Mario Testino following Princess Charlotte's baptism on Sunday July 5."

Happy birthday, little prince! Here's to many more amazing photographs.