Wildflower and Screwball: Billie Eilish and Finneas design jewellery for John Hardy
The siblings have co-designed their first collection for the jewellery brand: 21 pieces in sterling silver, some set with lab-grown diamonds – delicately floral and boldly industrial.

Archive image · Photo: Premeditated / Wikimedia Commons, CC BY-SA 4.0 (cropped and resized)
Jewellery brand John Hardy on 21 October unveiled the first collection co-designed by Billie Eilish and her brother Finneas O'Connell. The siblings have been creative partners of the house since 2025, initially for its lab-grown diamond line Lovestruck. They spent the past year working on the 21 new pieces with the brand's design teams in New York and Bali. According to trade magazine JCK, the pieces use reclaimed metals and are made in facilities powered entirely by renewable energy.
The collection has two sides. Wildflower is named after Eilish's Grammy-winning song of the same name and features three floral motifs with carved, articulated petals in sterling silver, set with lab-grown diamonds. Screwball relies instead on sculptural chain links and spherical hardware inspired by piercing jewellery. "Jewelry has always been an enormous part of how I express myself," Eilish said. Day to day she wears daintier pieces, she added, while on tour she prefers chunkier ones.
Creative chairman Reed Krakoff said the pair "challenged us to think differently about the tension between softness and strength". Finneas said he and his sister had become "more minimalistic" in their taste over the years. Brand president Matt Tepper told trade outlet Glossy that John Hardy does not "really do a lot of collabs", but called the siblings a great fit, partly because they advocate for sustainability. The campaign featuring both was shot by Trey Laird on grainy Super 8 film.
