Wearing a vibrant red coat from Epan in London, Catherine stood out not only for her elegance but also for the symbolism of the outfit, as red is the national colour of Wales. Her appearance with Prince William and her children underscored their respect for Welsh traditions. The red coat dress, which was re-worn in 2021, demonstrated Catherine’s commitment to timeless style and sustainable fashion. Known for re-wearing outfits, she added depth to her fashion choices.

The tailored fit of the coat created an effortlessly regal look, ideal for a commemorative visit. Her choice of red was significant, highlighting her intention to honor her Welsh heritage. She complemented her outfit with simple black accessories, focusing on the striking red coat. Prince William looked dapper in a navy suit, while George and Charlotte brought special charm; George wore a navy suit like his father, showing the initial confidence of a future king.

Princess Charlotte looked elegant in a navy coat, paired with neat blue Mary Jane shoes and white socks that matched her mother's outfit. During the visit to Cardiff Castle, the family participated in various activities, meeting performers and local residents who contributed to the celebration. Catherine naturally connected with the public, chatting and smiling with the locals, which further strengthened the royal family's relationship with Wales. George and Charlotte showed grace and warmth, showing the charm of the royal family.

The family then returned to London for a grand celebration at Buckingham Palace, where Catherine changed into a sleek white dress by Self-Portrait. The choice was fitting for the occasion and highlighted her sophisticated style. The contrast between the bold red coat and the casual elegance of the white outfit proved her versatility as a modern royal fashion icon. This wasn’t Catherine’s first notable red outfit, during her visit to Wales in 2020 she wore a striking red Zara coat, showcasing her love of bright colours and sustainable fashion.

At the opening of the Victoria and Albert Museum’s Centre of Photography in 2018, she wore a burgundy Emilia Wickstead dress, showcasing her love of bold shades. As Prince William is next in line to become the Prince of Wales, the visit was particularly significant, underlining how the couple are preparing George and Charlotte for their future roles in the royal family. Their presence at such a high-profile event, along with Catherine's choice to wear the national colours of Wales, highlighted the family's deep respect for their ties to the country.