By Wonderwall.com Editors
6:11am PDT, Oct 18, 2021
Prince William (in a green velvet blazer he's worn before) and Duchess Kate (in a lilac Alexander McQueen dress from 2011) are pictured as they arrived at the Earthshot Prize Ceremony at Alexandra Palace in London on Oct. 17, 2021. Guests were asked not to buy anything new to wear to the inaugural green awards event, which was created by the Duke of Cambridge and his Royal Foundation, which will annually honor five winners whose ideas help the environment.
Keep reading for more photos of the British royals, guests like Emma Watson and more stars at the new soon-to-be annual event…
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Emma Watson, who wore an ensemble made from 10 recycled gowns, in keeping with organizers' request that guests refrain from buying new clothing for the environmentally conscious event, posed as she arrived at the inaugural Earthshot Prize Ceremony — which honors five winners with an award of $1.4 million each to pursue solutions to the world's greatest environmental problems — at Alexandra Palace in London on Oct. 17, 2021.
Presenter Emma Watson is pictured arriving at the inaugural Earthshot Prize Ceremony at Alexandra Palace in London on Oct. 17, 2021.
See her unique look from the side next…
Emma Watson wore bellbottom trousers and chunky black boots with her recycled look at the inaugural Earthshot Prize Ceremony at Alexandra Palace in London on Oct. 17, 2021.
Emma Thompson — who wore the same blue-and-black Stella McCartney suit that she donned when she was appointed a Dame Commander of the Order of the British Empire in 2018 — showed off her badge (and her white sneakers!) as she arrived at the inaugural Earthshot Prize Awards Ceremony at Alexandra Palace in London on Oct. 17, 2021.
Prince William looked royally suave in a green velvet blazer with a black turtleneck and black trousers as he arrived at the inaugural Earthshot Prize Ceremony at Alexandra Palace in London on Oct. 17, 2021.
Duchess Kate posed on the green carpet at the Earthshot Prize Ceremony at Alexandra Palace in London on Oct. 17, 2021.
Emma Watson arrived at the inaugural Earthshot Prize Ceremony at Alexandra Palace in London on Oct. 17, 2021.
Prince William and Duchess Kate posed on the appropriately green carpet at the Earthshot Prize Ceremony at Alexandra Palace in London on Oct. 17, 2021.
Presenter David Oyelowo and wife Jessica Oyelowo arrived at the inaugural Earthshot Prize Awards Ceremony at Alexandra Palace in London on Oct. 17, 2021.
Prince William and Duchess Kate spoke with guests including William Hague, Christiana Figueres, London Mayor Sadiq Khan and footballer Dani Alves before the inaugural Earthshot Prize Awards Ceremony at Alexandra Palace in London on Oct. 17, 2021.
The hosts for the evening's broadcast, Dermot O'Leary and Clara Amfo, posed together on the green carpet at the Earthshot Prize Awards Ceremony at Alexandra Palace in London on Oct. 17, 2021.
Dame Emma Thompson posed on the green carpet at the inaugural Earthshot Prize Awards Ceremony at Alexandra Palace in London on Oct. 17, 2021.
Music star KSI, who performed during the event, posed on the green carpet at the inaugural Earthshot Prize Awards Ceremony at Alexandra Palace in London on Oct. 17, 2021.
