Prince George looks all grown up in his official Eton College portraits.

The 13-year-old royal wore his uniform as he posed with a big smile on his first day of school on Tuesday.

George’s outfit included a black tailcoat, waistcoat, pinstriped pants and a white shirt with a stiff collar.

He put his hands in his pockets in one photo, while he elegantly folded his hands in front of him in the two other images.

George was accompanied by his parents, Prince William and Kate Middleton, as he arrived for his first day at Eton College in Berkshire, England.

The Prince and Princess of Wales braved the rain as they walked with their eldest child into William’s alma mater.

George’s pre-school uniform outfit included a black suit with a blue tie and brown shoes.

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