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- The Duke and Duchess of Cambridge attended the Earthshot Prize Awards ceremony on Sunday.
- Both Prince William and Kate Middleton appeared to don outfits they've previously worn.
- Prince William announced the Earthshot Prize, an environmental initiative, in 2020.
The Duke and Duchess of Cambridge stunned as they attended the inaugural Earthshot Prize Awards at the Alexandra Palace in London on Sunday.
Prince William launched the global environmental initiative last year, inspired by U.S. President John F. Kennedy's 1962 "Moonshot" speech, which encouraged Americans to support moon exploration.
Royal commentator Robert Johnson noted that Kate Middleton's outfit – a flowing lilac-hued gown with a jeweled belt – is an Alexander McQueen dress she previously wore 10 years ago. Middleton, who shares three children with Prince William, last wore the gown at the 2011 BAFTA Brits to Watch event in Los Angeles.
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Royal commentator Alison Eastwood reported that Prince William's velvet green blazer was a recycled look as well. He reportedly wore the bold blazer in 2019 at Centrepoint's 50th-anniversary charity gala.
According to Express, organizers asked attendees to "consider the environment when choosing their outfit" for the event.
Insider's Morgan McFall-Johnson reported that activists have spoken out against textile waste, fast fashion, and the fashion industry for its impact on the environment. In 2019, the fashion industry emitted more carbon than international flights and maritime shipping combined.
Insider reached out to the Duke and Duchess of Cambridge's representatives for further comment.
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Prince William and The Royal Foundation described The Earthshot Prize as "the most prestigious global prize for the environment in history."
"As well as identifying evidence-based solutions to the biggest environmental problems the planet faces, The Earthshot Prize aims to turn the current pessimism surrounding environmental issues into optimism that we can rise to the biggest challenges of our time," a statement on The Royal Foundation website read. According to the website, "Earthshots" refer to "simple but ambitious goals" for the planet that if achieved by 2030 can improve overall life.
Out of the 15 finalists, which include the Pole Pole Foundation and the Republic of Costa Rica, five winners will be chosen and awarded one million pounds, or $1.3 million USD. The event's hosts are Clara Amfo and Dermont O'Leary with musical performances by Ed Sheeran, Shawn Mendes, and others.
While speaking to BBC's Adam Fleming this month, Prince William said he would consider it an "absolute disaster" if his eldest son had to tackle climate change as a monarch.
"For me, it would be an absolute disaster if George is sat here talking to you or your successor, Adam, you know in like 30 years' time, whatever, still saying the same thing - because by then we will be too late," Prince William said.