Kate Middleton and Prince William brought all their three children to Buckingham Palace yesterday so that they all would join the Queen for her annual Christmas lunch.

People failed to believe how grown-up Prince George, Princess Charlotte, and Prince Louis looked like, and we can totally relate. The Cambridge family was seemingly delighted to spend the afternoon with the British monarch while eating a bunch of yummy meals.

Kate Middleton’s fashion

Kate Middleton’s Christmas outfits are gorgeous all the time, and this time was no exception. The Duchess of Cambridge was seen sporting an elegant tartan dress by Emilia Wickstead while driving a car to the Palace.

The plaid red-and-green dress features a white statement collar and dramatic puff sleeves. The Christmas-like number is believed to be the ‘Anni’ tartan pleated chiffon-crepe midi dress, costing $2,500, though it’s currently on sale at $1,000.

Kate Middleton’s style was completed with her favorite floral pearl earrings, which she often chooses for remarkable occasions. The ‘Cavalfiore Pear Studs’ are made by British jewelry designer, Cassandra Goad. What’s interesting is that each pearl is studded with a diamond. The pair of earrings cost $5,710.

The Cambridges’ Christmas card is already on! Although Prince William and Kate Middleton haven’t posted it yet on the official accounts, we’ve gotten it — and it’s so amazingly beautiful!