Britain's Catherine, the Duchess of Cambridge
Britain's Catherine, the Duchess of Cambridge walks during the launch of their Heads Together campaign to eliminate stigma on mental health at Queen Elizabeth Olympic Park, in London, Britain, May 16, 2016. PHOTO: REUTERS/TOBY MELVILLE

On Wednesday, Kate Middleton made a "dramatic" appearance at a special event held at Buckingham Palace. At Her Majesty's Diplomatic Reception, the Duchess of Cambridge wore a special tiara and floor-length gown, but she also wore a particular brooch that had a special message behind it.

According to the Sun, Kate wore the Royal Family Order of Queen Elizabeth II, which is an honor given to female members of the family by the monarch herself. The design "features a painting of the Queen pinned to yellow ribbon" and is often worn during official state occasions. The Queen reportedly gave Kate the special accessory in April 2018, but the Duchess of Cambridge waited until October 2018 to first debut it at a Buckingham Palace dinner.

However, the Duchess' piece has a special twist as it is made out of glass instead of the traditional ivory. This is due to the fact that the material has been banned as it is often acquired by killing elephants. The reasoning behind the swap is suspected to revolve around Prince William's "personal fight to end the ivory trade."

READ: Queen Elizabeth, Kate Middleton Refuse To Participate In This 'Vicious' Activity

This would not be the first time that a member of the British royal family has decided to send a subtle message through their royal fashion. Earlier this year at Remembrance Day events, both Kate and Meghan Markle each wore special poppy brooches that quietly conveyed different things to royal watchers.

It has also been reported that Kate found inspiration in the Duchess of Sussex's commtiment to sustainability, which was highlighted earlier this year when Kate was spotted wearing a particular item of clothing.