Prince George’s Royal Christening: Duchess Kate Middleton and Duke Prince William Release Official Family Photos [See Photos]
Prince William, his wife Catherine, Duchess of Cambridge and their son Prince George in the official portrait for the christening of Prince George.Reuters

Prince William, Kate Middleton and Prince George have started off their first Christmas festivities together as the young royal family attended the Queen's annual pre-Christmas lunch at Buckingham Palace.

The annual lunch was a gathering for the entire royal family and was attended by about 50 royals, including Prince Charles, the Duchess of Cornwall, Princess Beatrice and Princess Anne.

Only Prince Harry was missing from the feast as he is still on his way back from the South Pole. The 29-year-old prince has been on an expedition to Antarctica for the Walking with the Wounded South Pole Allied Challenge since last month.

Kate Middleton's Pre-Christmas Look

The Duchess of Cambridge wore a festive red dress with a glossy blow-dried hairdo to the family lunch, while Prince William donned a blue Oxford shirt with a navy blue suit and a tie.

The Duke of Cambridge was wearing his glasses as the royal couple drove in their Range Rover.

William, Kate and George's First Christmas

The Duke and Duchess of Cambridge are celebrating their first Christmas as parents of Prince George who was born in July. The five-month-old little prince attended the second such large family gathering since his christening in October.

As reported earlier, William and Kate are likely to spend their Christmas alone with their son or with some friends or at Kate's family mansion.

"Like any new family, they're looking forward to having some time alone, but they also want to catch up with friends," an insider said.

Sources have also revealed that the royal couple would be dividing their time during the Christmas holidays with Kate's family and the Queen in Sandringham House in Norfolk.

There could also be a pleasant surprise in store as a rumour about Kate's second pregnancy has been rife for the last couple of months. This followed a disclosure by a royal insider that the Duke and Duchess of Cambridge would be glad if Catherine became pregnant by Christmas since the royal couple were excited over a sibling for George.