Kate Middleton’s new holiday tradition has grown in the three years since it began — and so has her family!

Since 2021, Kate Middleton has hosted the “Royal Carols: Together At Christmas” concert in London, bringing together the royal family, luminaries and invitees to share in some holiday cheer.

In its first year, which came on the tail of the COVID-19 pandemic, the Princess of Wales said the event was in part to “say a huge thank you to all those amazing people out there who’ve supported their communities. We also wanted to recognize those whose struggles perhaps have been less visible, too.”

She continued in an introduction ahead of that first event, “We’ve been through such a bleak time. We’ve seen so many challenges, we’ve lost our loved ones. We’ve seen our frontline workers under immense pressure. And, also, we’ve been more emotionally, and socially, distanced and isolated from each other. I suppose through that separation we’ve also realized how much we need each other and how acts of kindness and love can really bring us comfort and relief in times of distress.”

In its three years, the event has evolved to include her children, in addition to husband Prince William, with many special moments for the family of five along the way. Here, see some of the sweetest photos of the family at “Together At Christmas” through the years.

2021

Kate Middleton in 2021. ALEX BRAMALL/KENSINGTON PALACE VIA GETTY

In the first year, Kate surprised at-home viewers and guests by playing piano herself, alongside singer Tom Walker.

Kate Middleton in 2021. YUI MOK – WPA POOL/GETTY

During the ceremony, Kate was flanked by Prince William and Sophie, Countess of Wessex, with sister Pippa Middleton and cousin-in-law Princess Eugenie nearby.

2022

Prince William, Kate Middleton, Princess Charlotte and Prince George in 2022. JAMES MANNING/PA IMAGES VIA GETTY IMAGES

In 2022, Princess Charlotte and Prince George joined their parents, coordinating in their dress clothes and walking into the ceremony together.

Princess Charlotte and Prince George in 2022. GETTY

The young royals stayed close to one another, sitting quietly throughout the ceremony.

The Royal Family in 2022. GETTY

That year brought a strong showing, including several extended members of the royal family and Kate’s close relatives, too.

2023

Prince William, Kate Middleton, Princess Charlotte, Prince George and Prince Louis in 2023. CHRIS JACKSON/GETTY

The gang’s all here! Prince Louis joined in the pageantry for this year’s concert, held on Dec. 8, 2023, at Westminster Abbey.

Prince William, Kate Middleton, Princess Charlotte, Prince George and Prince Louis in 2023. JAMES VEYSEY/SHUTTERSTOCK

All three of the young royals participated in duties including greeting the clergy …

Princess Charlotte, Prince George and Prince Louis in 2023. CHRIS JACKSON/GETTY

… sending letters (perhaps to Santa?!) …

Prince William, Kate Middleton, Princess Charlotte, Prince George and Prince Louis in 2023. AARON CHOWN – WPA POOL/GETTY

… and following along during the event.

Princess Charlotte and Prince Louis in 2023. CHRIS JACKSON/GETTY

But there had to be a tiny bit of mischief from the youngest royal, too!