Kate Middleton joined her husband Prince William for a somber occasion in London on Monday, as the Prince and Princess of Wales commemorated Holocaust Remembrance Day with a special service. The memorial marked the 80th anniversary of the liberation of Auschwitz-Birkenau during World War II.

For the sobering occasion, Kate favored respectful attire, wearing pieces evocative of subdued elegance. The Princess of Wales’ attire featured trousers by Roland Mouret, a coat by Catherine Walker, a five-strand pearl necklace and what appeared to be sentimental earrings that once belonged to Queen Elizabeth II.

Kate Middleton attends a ceremony commemorating Holocaust Memorial Day on Jan. 27 in London.

Kate wore the Bahrain Pearl Drop earrings for the occasion, pieces that she’s previously worn on similarly sobering occasions. Queen Elizabeth II received the pearls after her wedding to Prince Philip and often wore them for public events.

Prince William, left, and Kate Middleton attend a ceremony commemorating Holocaust Memorial Day on Jan. 27 in London.

The earrings were eventually passed down to Kate, who’s worn them regularly for such occasions as Remembrance Day services in the United Kingdom. In 2021, the Princess of Wales wore the earrings for Prince Philip’s funeral. The earrings were also worn to Queen Elizabeth II’s funeral in 2022.

Kate’s appearance at the Holocaust Remembrance Day service marks one of her first public events since she announced her cancer remission. The Princess of Wales underwent chemotherapy treatment in 2024 for an undisclosed form of cancer she publicly disclosed in March 2024.

Catherine, Princess of Wales and Prince William, Prince of Wales attend a ceremony commemorating Holocaust Memorial Day on January 27, 2025 in London, England. Prime Minister Keir Starmer and Prince William were among the British officials and celebrities who marked Holocaust Memorial Day and the 80th anniversary of the liberation of Auschwitz-Birkenau during World War II.

Since completing her treatment in September, the royal slowly rejoined members of the British royal family at public events. Prior to the Holocaust Remembrance Day service, the Princess of Wales visited with patients at the Royal Marsden Hospital, where she received treatment.

Kate Middleton, left and Prince William attend a ceremony commemorating Holocaust Memorial Day on Jan. 27 in London.

Ahead of the Holocaust Remembrance Day services, the Prince and Princess of Wales took to their official Instagram account to share a message to commemorate the occasion. “Today we remember the six million Jews murdered in the Holocaust, victims of Nazi persecution, as well as the victims of more recent genocides, including Cambodia, Rwanda, Bosnia and Darfur,” the caption to their post read.