Catherine, Princess of Wales, attended the annual Festival of Remembrance at Royal Albert Hall in London on Saturday, marking two months to the day since she announced she was “cancer-free.”

During her Nov. 9 appearance, Princess Kate paid a subtle tribute to her late mother-in-law, Princess Diana, wearing a pair of Collingwood pearl earrings that once belonged to the former royal, People reports.

Beyond the three poppies, Middleton's outfit had even more hidden meanings. For starters, her Catherine Walker coat dress was likely a tribute to Princess Diana, who counted Walker as a personal friend and one her favorite designers. Meanwhile, her Collingwood pearl earrings previously belonged to the late Queen Elizabeth.