The duchess's outfit choice gave a subtle nod to Princess Di; poppies are often used in the U.K. to signify remembrance of those who have died. The dress also featured a pussy bow tie at the neckline, a style Diana herself was often photographed wearing.
The trio visited The Sunken Garden, which was transformed into a White Garden dedicated to the princess. White roses, lilies, gladioli, and cosmos have been planted in her honor, creating a “peaceful and contemplative space where visitors can reflect,” according to Kensington Palace. Representatives from the many charities that Diana worked for were also present at the commemorative event.
Thursday, Aug. 31 marks the 20th anniversary of Princess Diana’s tragic death, and we wouldn't be surprised to see even more moving tributes from her two loving sons.
This article originally appeared on InStyle.