My George, how you've grown!
Now, he's a big brother with his own stamp. But back in 2014, he was a rambunctious 9-month-old who stole all the attention away from his parents.
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The world got its first glimpse at Prince George's lively personality during the family's official visit to New Zealand and Australia in April 2014.
Greeting dignitaries after an hours-long flight, hanging out at his first public playdate – George mastered it all.
But the most adorable moment for the family of three? Their trip to Sydney's Taronga Zoo, where George was given a stuffed bilby (which he then proceeded to throw on the ground.) Then his parents introduced him to a real-life bilby – named George!
The whole scene made for a bunch of photos that would melt even the chillest of hearts.
I mean, look at those proud, adoring smiles from his parents. It's an undeniable sign that the world's cutest couple was now the world's cutest family.
And of course, those cheeks.