The 28-year-old princess wore a blue cardigan, a matching jumper and a long pleated maxi skirt for the outing, which perfectly matched her look.

She also wore cute flower earrings and tied her hair back with a pin.

Princess Kako took a shovel and planted a tree.

Princess Kako / Photo: Getty Images

Tree planting is usually done by members of the British royal family.

King Charles III, his wife Camilla or Kate and William of Wales are often photographed doing this.

But, the Japanese are not alien to tradition either.

Princess Kako / Photo: Getty Images

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  • In a blue dress and with pearl jewelry: Japanese Princess Kako visited a temple in Tokyo