It's the Christmas festive season at Buckingham Palace and Prince George and Princess Charlotte shared a pre-Christmas luncheon with the rest of the Royal Family.

It was the usual annual tradition that starts the Christmas season, making the Royals live it up in style, according to Hollywood Life.

On Dec. 20, in a Christmas carpool, the 34-year-old Prince William drove his family to 90-year-old Queen Elizabeth II's pre-Christmas lunch at Buckingham Palace. After the shared lunch, the Queen and Prince Philip will leave for Sandringham to complete their festive season together.

Christmas Day at Sandringham is only for the immediate family, so it brings the entire brood together.

There is a slight departure from the tradition this year, though, according to aACB News. Prince William, Princess Kate, George and Charlotte are planning to join the Middletons in Bucklebury; Berkshire, said a Kensington Palace aide. Prince William is said to be "very close" to the Middletons. They will all be joined by Kate's sister, Pippa Middleton, and her new fiancé, financier James Matthews, along with Kate and Pippa's brother, James Middleton.

But for the pre-Christmas lunch on the 20th, it was quite a huge turnout. Prince William and Kate were joined by 32-year-old Prince Harry in their Range Rover. Princess Kate looked dashing in a bright, purple coat, wearing a large, engagement ring. The three-year-old Prince George wore a collared blue coat and patterned button-down.

There was another procession of family visitors after their arrival. First they were joined by Prince Charles and Camilla, Duchess of Cornwall, and then Princess Beatrice and Princess Eugenie in separate cars. They all waved to the public and then proceeded to enter the palace.

They were followed by the Queen's cousin Prince Michael of Kent, wife Princess Michael of Kent, their daughter Lady Gabriella, son Lord Frederick Windsor and his wife, Sophie Winkleman.

On a previous day, at a Christmas party hosted by The Mix, a mental health youth center, Prince William said to DJ AJ King that Prince George had started opening his Christmas gifts. George might be on Santa's naughty list, or at least on his parents' naughty list, joked Prince William.

"The Duke said they were all really excited about Christmas and that George is already opening his presents," King said. "He thought it was quite funny. That's kids for you, even the ones that are princes."

Watch the video below for the royal family get-together two years ago.

YouTube/Wochit Entertainment