Britain’s Queen Elizabeth, 90, will miss a traditional Christmas church service on Sunday for the first time in nearly 30 years because of heavy cold, a Buckingham Palace spokesman said.

Queen Elizabeth has joined the Christmas service at the parish church of St. Mary Magdalene in Sandringham annually since 1988.

Elizabeth is considered the world’s longest-reigning living monarch.

Her majesty and her husband Prince Philip, 95, went through what the Palace described as heavy colds this week that obstructed their journey to their Sandringham country residence in eastern England.

“Her Majesty The Queen will not attend Church at Sandringham this morning. The Queen continues to recover from a heavy cold and will stay indoors to assist with her recovery,” a Palace spokesman said.

“Her Majesty will participate in the Royal Family Christmas celebrations during the day,” the Palace said.

After more than six decades on the throne, the Queen has cut back on international tours but still regularly performs official duties around Britain, although she said on Tuesday she would reduce the number of her patronages.