Adorable new Prince George photos mark royal's 6th birthday

SEE: Will and Kate’s 2018 Christmas Card

Happy birthday, Prince George!

The eldest child of Britain's Prince William, Duke of Cambridge, and Catherine, Duchess of Cambridge, turned 6 on Monday.

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Kensington Palace tweeted new photos of the adorable royal Sunday. The duchess, formerly known as Kate Middleton, snapped two of the pictures recently at the palace in London and a third while on vacation, according to the royal family.

>> See the photos here

George has two younger siblings, Princess Charlotte, 4, and Prince Louis, 1.

In this undated photo released by the Duke and Duchess of Cambridge on Sunday, July 21, 2019, Britain's Prince George poses for a photo taken by his mother, Kate, the Duchess of Cambridge, in the garden of their home at Kensington Palace, London.

Credit: The Duchess of Cambridge via AP

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Credit: The Duchess of Cambridge via AP