The Duchess joined Prince William for a visit to the Keech Hospice in Luton, England to raise awareness for mental health.
The pair also visited the Youthscape Project which specialises in supporting young adults with their social, emotional and spiritual development.
The Duchess opted for a dress the archives for the occasion, donning the same floral LK Bennett Poppy Print dress that she wore during her Royal Tour of Australia in 2014.
Kate accessorised the look with her favourite nude LK Bennett pumps, a matching clutch ad diamond drop earrings.
During the Youthscape visit, Kate chatted with teens who were baking in the centre’s kitchen, and revealed her son, Prince George, 3, is quite the messy chef.
"So, what are you making? This smells seriously good," she asked of their chocolate creation. "What are you putting in? Is this just chocolate? Golden syrup? Good, good."
“When I try to do this with George at home, chocolate and the golden syrup goes everywhere,” the stylish duchess said. “He makes so much mess. It’s chaos.”