Duchess Kate's latest appearance in a light green coat strikingly resembled late Princess Diana

With just a few weeks left until her third royal baby arrives, the Duchess of Cambridge is still working hard.

As reported by People, Kate Middleton attended an event recently in partnership with the Royal Foundation. The expectant mother, who is due to welcome her third baby in April, opted for a Jenny Packham bright green dress and matching coat.

Her look resembled Prince William's late mother, Princess Diana. The outfit also showed off her noticeably grown baby bump because it was buttoned up at the top and open at the bottom.

Kate accessorized her look with a pair of tan suede Gianvito Rossi pumps and green amethyst cushion drop earrings by Kiki McDonough, according to People.

Alongside with her husband and brother-in-law, Prince Harry, the Duchess has been an outspoken advocate on the importance of prioritizing mental health.

During a symposium, Kate talked about the childhood mental health with several experts. She also hosted the event alongside the President of The Royal Society for Medicine and Regius Professor of Psychiatry at King’s College London, Sir Simon Wessely.

Kate discussed the negative impact "if problems emerging at the youngest age are overlooked, or ignored."

"It is therefore vital that we nurture children through this critical, early period,” she continued.

Kate explained that "providing children in their earliest years with social and emotional security builds strong foundations which last a lifetime."

She concluded that she felt "so passionately about the importance of early intervention" and that "we can make a real difference for generations to come" if we work on new approaches together.

People reported that the event was one of her final official engagements before she gives birth to her third offspring with William.

The publication also reported that the couple celebrated the Commonwealth ahead of the Commonwealth Heads of Government Meeting in April.