Kate Middleton looks stunning in grey coat on Christmas Day outing with Prince William, George and Charlotte

Keeping with the age-old tradition, the royal family headed to a church in Sandringham on Christmas morning. However, one member of the family who grabbed all the attention was Kate Middleton, whose spectacular outfit became an instant hit.
The Duchess of Cambridge, 37, donned a grey double-breasted coat with a dark green fascinator for the occasion—a perfect choice for the chilly morning—as she walked beside her husband, Prince William, 37, accompanied by their children, Prince George, 6, and Princess Charlotte, 4, Harper's Bazaar reported.

Ever since the holiday tradition was started by the queen's great-great-grandmother, Queen Victoria, who used to visit St. Mary Magdalene, a church close to the Sandringham estate, this was the first year that marked the joint appearance at the service by the newest generation of royals.
"It will be so sweet. It's the picture all royal fans want to see," one royal insider told The Sun. “The royals walking to church on Christmas Day is a rite of passage and so William and Kate didn't want to expose their children too early, but they feel they’re old enough now."

Prince William's first appearance at the church service in Norfolk was at the age of five, while his brother Harry's was when he was four.
Since marrying Prince William in 2011, the Duchess has attended every Christmas church service, skipping the celebrations at Sandringham House only twice in the past—in 2012 and 2016—when the Cambridges decided to stay with the Middletons in Berkshire.
Prince Harry and Meghan Markle took a page out of the Cambridges life as they decided to spend this year's Christmas with Doria Ragland, the Duchess of Sussex’s mother, rather than the Queen.
Regarding their highly controversial decision, a spokesperson for the Sussexes said, “Having spent the last two Christmases at Sandringham, [the couple] will spend the holiday this year, as a new family, with the Duchess’ mother Doria. This decision is in line with precedent set previously by other members of the Royal Family, and has the support of Her Majesty The Queen.”