Billie Eilish has emerged as a leading advocate for climate change and sustainability, actively raising awareness through her music, public appearances, and tours.

Her activism is recognized by industry figures, with Billboard UK noting her prominent role in promoting environmental issues.

Eilish emphasizes sustainable and ethical production in her merchandise, prioritizing quality and longevity despite higher costs.

During her current tour, she has introduced 'Eco-Action Villages' that provide water stations and donate surplus food to local shelters, demonstrating her commitment to waste reduction.

She has partnered with brands like Nike and Gucci to promote sustainability, including the use of vegan and recycled materials in fashion.

Her personal lifestyle choices, such as being vegan and choosing ethical beauty products, reflect her dedication to environmental consciousness.

At the 2021 Met Gala, she made a statement by wearing Oscar de la Renta only after the brand committed to cease using fur, highlighting her stance against animal cruelty.

Eilish’s album 'Hit Me Hard And Soft' featured environmentally-friendly packaging, reinforcing her commitment to sustainability in her artistic projects.

Together with her mother, she advocates for plant-based food initiatives through Support + Feed, aiming to improve food security and reduce environmental impact.

Her music and public persona often address environmental issues, exemplified by her 2019 song 'All The Good Girls Go To Hell,' which highlights global warming.

Eilish collaborates with REVERB to promote greener practices in live music, including solar energy use at her performances.

She is organizing the upcoming climate summit 'Overheated' during her London tour, bringing together activists and thought leaders to discuss environmental challenges.