Happy birthday to Prince George, who turned six years old on Sunday.

As is tradition, Kensington Palace released pictures to mark the occasion and, just like previous years, they were taken by his avid photographer mum, Kate Middleton.

Prince George birthday pictures
The Duchess of Cambridge

Two of the photos were taken recently in the garden of their home in Kensington Palace, showing the young Prince smiling and laughing in an England football shirt. The fact the photos were taken 'recently' suggests the six-year-old was wearing his top to cheer on England's Lionesses during the Women's World Cup.

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Prince George birthday pictures
The Duchess of Cambridge

The third photo, showing George wearing a green polo shirt, was taken while the Cambridge family were on holiday, the palace said.

'The Duke and Duchess of Cambridge are very pleased to share three new photographs of Prince George to mark His Royal Highness's sixth birthday,' they said in a statement.

Prince George's sixth birthday
The Duchess of Cambridge

As has become custom with photos of the Cambridge children, the pictures were taken by Kate Middleton who is a keen photographer - recently taking over the Queen as royal patron of the Royal Photographic Society.

Prince George, Kate and William's eldest child, was born on 22 July, 2013 at the Lindo Wing in Paddington, with his full name registered as His Royal Highness Prince George Alexander Louis of Cambridge.

The Duke Of Cambridge And The Duke Of Sussex Take Part In The King Power Royal Charity Polo Day
Max Mumby/Indigo//Getty Images
Kate, Louis, Charlotte and George at a polo match in July

He's now a big brother to Princess Charlotte, four, and Prince Louis who turned one in April.

Over the past year he's also become an elder cousin to Archie Mountbatten-Windsor, Prince Harry and Meghan Markle's first child, and Arthur Matthews - Pippa Middleton and James Matthew's son, who was born in October.

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Prince George in pictures | ELLE UK
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Olivia Blair
Entertainment Editor (Luxury)

Olivia Blair is Entertainment Editor (Luxury) at Hearst UK, working across ELLE, Esquire and Harper's Bazaar. Olivia covers all things entertainment and has interviewed the likes of Margot Robbie, Emma Stone, Michaela Coel and Ryan Gosling over the years.