If you look closely at the attire of the Princess of Wales, there is always a deeper meaning to be found. For example, her attire in today's "Trooping the Colour" is full of symbolic meaning: she was the best-known Princess of Wales until Kate herself was given the title 25 years after Diana's death in 1997.

Kate's outfit, a green dress by Andrew Gn and matching hat by Philip Treacy, was also meant to be a sweet cheer for her husband, Prince William, "People" reports Gn is a designer from Singapore, and "Kate's choice, was a clear nod to her husband, Prince William, for the Earthshot Award. (Green is also a nod to her being a colonel in the Irish Guards and one of the colors of the Welsh flag. Gn, by the way, is also a favorite of Queen Rania of Jordan. Kate just attended the Jordanian royal wedding earlier this month with William.

Meanwhile, William and Kate's children, Prince George, Princess Charlotte, and Prince Louis, paid homage to the British Union Jack, wearing red, white, and blue in a beautiful flag outfit

Also, in connection with her late mother-in-law Princess Diana, Kate may have chosen green as her first Trooping the Colour as Princess of Wales.

"I think we've seen many examples where the reference is very deliberate, and I think Kate is using fashion to pay tribute to Princess Diana in a very positive way," said Bethan Holt, fashion news and features director for The Daily Telegraph. Bethan Holt, fashion news and features director for The Daily Telegraph, told People.

Kate also accessorized her look with a gold Cartier shamrock brooch.

"I think this is her moment of power," Holt said. 'She's been able to handle her role as Princess of Wales and her promotion so easily and in such a beautiful way. She has this big new title and she is dressing for the job."