Kate Middleton's Son Prince Louis Wore Festive Green Sweater to the Queen's Annual Christmas Lunch

The royal family is celebrating that time of the year again. As the holidays get underway, the royals and their kids are getting into the flow of Christmas events.

A week ahead of Christmas day, Prince Louis, one, was spotted with a festive sweater as he made his way to the Queen's Christmas Lunch on Wednesday.

The young tot was in the vehicle with mom Kate Middleton, who arrived with her kids solo — husband Prince William drove separately. Photos of her and Louis are found below.

Louis goes green

Princess Charlotte, four, was also on board. The mother-daughter duo both wore red ensembles for the occasion. Charlotte's outfit leaned to more of a burgundy shade.

Meanwhile, Louis was dressed in a green sweater that featured white snowflakes. The design was recognized a mile away — or at least from outside the car in photos taken by the media.

Prince George rides shotgun

As the youngest of his two siblings, Louis looked a little taken aback by what was going outside as he held his mouth open and wore a serious expression.

On the other hand, his six-year-old big brother Prince George looked accustomed to the frenzy. He rode shotgun in his father's vehicle, and his clothing was hidden from cameras.

Meghan and Harry didn't attend

While the Duke and Duchess of Cambridge all made their way to the pre-Christmas lunch, the Sussex family missed out on the annual event. Meghan Markle and Prince Harry are still in the US.

According to Cosmopolitan, the pair are enjoying a leave of absence with Markle's mother, Doria Ragland. Their son Archie will thus be spending his first Christmas away from the royal household.

No royal Christmas

The pair's six-week break from their royal duties also means they'll be with Ragland on Christmas Day. The queen reportedly understands the decision of the young royals.

Kate and her husband William are also big on family time, but they make sure to let their kids socialize with their peers. Last month, it came out that Louis attends a music playgroup for toddlers.

Louis and Kate's music group

The Daily Mail reported that the youngest of the Cambridge family goes to Monkey Music event with his mother. They regularly have a ball singing and dancing along with other families.

The UK company regularly hosts musical education classes for young kids and encourages parents to participate actively. Kate and Louis reportedly attend once a week.