Watson made her first major appearance in two years at the Earthshot Prize 2021 ceremony (where the carpet was technically green) on Sunday, Oct. 17 in London. The prize is all about finding solutions to the climate crisis, so the 31-year-old actor was sure to make a statement about sustainability with the outfit she wore, too. Read on to see Watson at the award ceremony, which was also attended by Prince William and Kate Middleton, and to learn more about her look. RELATED: This Is What All the Kids From Harry Potter Look Like Now. The last time Watson attended a red carpet event was in December 2019 for the premiere of her movie Little Women, in which she played Meg March. In the time since, she has faced retirement rumors, which she spoke out about in a rare Twitter post. In February, it was reported that Watson’s acting career was “dormant” and that she was engaged. Soon, her manager told Entertainment Weekly, “Emma’s social media accounts are dormant but her career isn’t.” A few months later, Watson spoke out about the rumors herself. “Dear Fans, Rumours about whether I’m engaged or not, or whether my career is ‘dormant or not’ are ways to create clicks each time they are revealed to be true or untrue,” she wrote on Twitter in May. “If I have news – I promise I’ll share it with you.” According to her IMDB profile, Watson does not have any future roles in the books just yet. The Earthshot Prize was established by Prince William and David Attenborough and is part of The Royal Foundation of the Duke and Duchess of Cambridge. Each year, for 10 years, five winners will receive £1 million to continue their efforts to fight climate change. This is the first year the prize was given out.ae0fcc31ae342fd3a1346ebb1f342fcb Watson has been outspoken about the climate crisis, particularly on the topic of sustainable fashion. On the same day as the Earthshot Prize ceremony, the first Instagram in over a year was posted to her account. The post is in support of the upcoming UN Climate Change Conference (Cop26) in Glasgow, Scotland, and her bio now reads, “Emma’s official Instagram has been taken over by an anonymous Feminist Collective for Cop26.” For more celebrity news delivered right to your inbox, sign up for our daily newsletter. Watson not only walked the green carpet, she also presented at the ceremony. And she did so in an outfit that was fitting for the event. The Harry Potter star wore a dress made of recycled wedding gowns by the designer Harris Reed. As Reed explained on Instagram, Watson’s white asymmetrical dress was made from wedding dresses from thrift stores. She also wore black flared pants and chunky black boots. Watson has made a point to wear more sustainable fashions when she attends events. In addition to wearing recycled and reworked clothes as she did at the Earthshot Prize, she has also often worn vintage clothing and outfits made out of more sustainable materials. For instance, she wore a blazer made out of deadstock fabric at the G7 Summit in 2019, and in 2017, she wore a dress made from fabric composed of recycled water bottles while promoting Beauty and the Beast. She previously had an Instagram account documenting all of her fashion choices for events and talk shows. RELATED: This Former Child Star Just Revealed How She Lost Her $17 Million Fortune.