She was promoting her Shaping Us campaign, which emphasizes the significance of a child's first five years.
Kate came to a halt at a flower stall, where the florist spoke with her about his business and gave her hyacinths.
The florist predicted that Prince William would buy Kate red roses for Valentine's Day, but she doubted it.
Kate expanded her social media reach by creating a new Instagram account for her Royal Foundation Centre for Early Childhood.
Kate emphasized the significance of our early childhood experiences in shaping who we become as adults.