4.In 2014, Lady Gaga wore a Gareth Pugh design created from upcycled coffee filters while appearing on Jimmy Kimmel Live!
5.Joaquin Phoenix made an effort to reduce waste by wearing the same Stella McCartney tux at five different awards shows in 2020.
6.Saoirse Ronan wore a chic Gucci gown at the 2020 Oscars, but would you have ever guessed the black fabric was sourced from her satin BAFTAs outfit?
7.Emma Watson graced the 2016 Met Gala in a black-and-white set made from recycled plastic bottles.
8.Rewind to the 2020 BAFTAs, Daisy Ridley wore a sheer Oscar de la Renta ensemble outfitted with sustainably sourced fabric.
9.Cameron Diaz's 2012 Met Gala gown shimmered all night with organic silk and recycled glass beading.
10.Thandiwe Newton celebrated the European premiere of Solo: A Star Wars Story by wearing a custom Vivienne Westwood dress featuring iconic Black characters from the film franchise. The one-of-a-kind look was also made up of GOTS-certified fabric and upcycled crystals for added shine.
11.The 2012 Oscars had a serious fashion moment from Meryl Streep who wore a shimmering gold Lanvin gown featuring fabric also made from recycled plastic bottles.
12.Lupita Nyong'o was yet another 2016 Met Gala attendee seen wearing a sustainable gown from the Calvin Klein Collection.
13.Emily Ratajkowski opted for vintage over new and rocked a designer look from the 1992 Versace collection.
14.H&M's Conscious Collection made an appearance at the 2017 Vanity Fair Oscar party when actor Rooney Mara wore a delicate ruffle dress using repurposed polyester.
15.Margot Robbie's white cut-out dress at the 2016 Met Gala had eco-conscious details like organic silk and zippers designed with recycled materials.
16.In 2019, Laura Harrier walked the Oscars red carpet wearing an eco-friendly, custom-made Louis Vuitton gown lined in Swarovski crystals and glass beading.
17.And finally, Billie Eilish enjoyed the 2022 Met Gala in a Gucci outfit that was entirely made from upcycled materials.
What's your favorite sustainable celebrity fashion look? Share your pick in the comments!