Liz Hatton, who died in November at age 17, was one of several girls and women the royal couple highlighted in social media posts for International Women’s Day.

Despite being two of the most famous people in the world, Prince William and Princess Kate tend to keep intimate details about their relationship out of the public spotlight. On Wednesday, Kate broke that tradition to make an uncharacteristically effusive comment about her husband’s support during her cancer treatment.

In honor of International Women's Day, Kate Middleton celebrated the memory of a teenager who recently passed away after a battle with cancer.