The little future King can be seen standing unaided and walking on his own in a brand new official photograph released by William and the Duchess of Cambridge, née Kate Middleton.
It's clear to see the tot has more than mastered the art of walking since his last public appearance at a polo match in Gloucestershire on Father's Day, when he could be seen taking a few wobbly steps on the grass while holding onto his mum's hand.
The adorable new picture - George's first ever solo portrait - was the result of a photoshoot to celebrate the little Prince turning one on Tuesday 22 July.
For the special occasion, William and Kate chose to dress the royal tot in a baby blue striped pair of dungarees from French children's clothing label Petit Bateau.
Flashing a heart-melting smile, George looked to be thoroughly enjoying himself at the Natural History Museum's tropical butterfly house.
George will have come face to face with hundreds of striking butterflies, moths and caterpillars during his visit to the iconic London landmark's special exhibit.
He seems to be already showing an interest in wildlife - which will no doubt please his animal-loving parents - and conservationist grandfather Prince Charles - immensely.
On his debut overseas tour to Australia earlier this year, George met a bilby named George in his honour at Sydney's Taronga Zoo, and looked to be fascinated by his new furry friend.
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The family may well chosen to set the photoshoot in he exhibit from the Natural History Museum given that Kate is its royal patron. She decided to take on the role after she opened the museum's Treasures exhibition in November 2012 and also accompanied William to Borneo, where they met museum scientists researching rainforest biodiversity.
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"When she was here last November it was clear to me how much she shares our passion for understanding and maintaining the diversity of our planet," said Director of the Natural History Museum, Dr Michael Dixon, at the time.
Don't miss this week's HELLO! issue celebrating Prince George's 1st Birthday.