The star launched a sustainable line that was made officially available for purchase on 2 January 2020. The 'Bad Guy' hitmaker has previously released collections with the likes of Urban Outfitters and Bershka.
The 18-year-old's range of oversized t-shirts, sweaters, sneakers, and bucket hats for the Swedish high street retailer H&M Divided, are all made from sustainable materials and feature her official logo.
In a promo post on H&M's official Instagram page, the brand wrote; "This Billie Eilish merch collection is a whole mood. What are you getting first??"
It's no secret that the teen star whose favourite colour seems to be green, is committed to help protect the environment, and she has teamed up with the non-profit organisation Reverb to make her upcoming 'Where Do We Go' world tour as green as possible.
In addition to this, Billie has created her own Eco-Village, which will feature refill stations for fans who bring their own reusable bottles to her gigs and educate them on climate change.
The Billie Eilish merch collection is now reportedly available to buy from H&M stores around the world and online.