Prince Anne's daughter, Zara Tindall, will attend Kate Middleton's traditional festive concert at Westminster Abbey next month, according to GB News.
Speaking atBeauty Awards in London, she also confirmed her family will spend Christmas at Sandringham with King Charles and other royals.
GB News reported that Zara was accompanied by her husband Mike Tindall as she stepped onto the red carpet on Monday at the awards.
The outlet said the couple and their three children - Mia Grace, 11, Lena Elizabeth, seven, and Lucas Philip, four - will participate in the traditional Norfolk gathering.
"We are so lucky, Christmas is always amazing," Zara commented. "We get to do a lot of fun things, and the place looks amazing. We will see everyone," she was quoted as saying.
The report also noted that it has not yet been confirmed if Andrew Mountbatten Windsor's daughters, Princess Beatrice and Princess Eugenie, will also attend the Kate Middleton's "Together at Christmas" carol service.
Beatrice and Eugenie have kept a low profile since their father, who recently lost his remaining royal titlesdue to his links with the late sex offender Jeffrey Epstein.
The report in GB New said, "If the sisters attend the Princess of Wales's concert and then join the King and Queen at Sandringham for Christmas, it will be seen as a significant show of support for the York sisters, who have had to weather intense public scrutiny."