Duchess Kate's recent eye-catching green outfit was reportedly a hidden message about Diana

Princess Diana's death will always be considered a very sad moment in history, not only because of her royal status but also because of who she was and how she perished.

Diana was only 36 years old when she died in a car crash in France, in 1997. The news of her passing shocked the world and headlines regarding the accident were made for weeks.

Even nowadays, the world hasn't forgotten the People's Princess, and many go out of their way to pay tribute to one of the most influential women the world has ever known, as reported by All Cute All The Time.

Kate Middleton, the Duchess of Cambridge, was one of those people. Although they never had the chance to meet each other, one could suppose that they would get along just fine.

Middleton, who is currently pregnant with her third child, and bound to give birth in April, paid tribute to her late mother-in-law by celebrating the first day of Spring in a very distinct outfit.

According to the source, the attire chosen by the Duchess appeared to be quite similar to the one that Diana wore more than 20 years ago. The design was slightly different, but the color was the same.

Middleton has never been a fan of hats, despite wearing them from time to time when the occasion requires her to, and Diana made sure to complete almost every outfit with a headpiece.

That was the main difference between the two when it comes to fashion. Diana loved green and used to wear it whenever possible, so it was a nice but subtle tribute from Middleton.

As reported by All Cute All The Time, the tribute might have been very subtle, so much that some people might not have picked up on it, but it was something that Diana would have certainly appreciated.