The pop star opens up to British Vogue about the transformative power of her most iconic hairstyle.

The nine-time Grammy-winning singer opened up in a new interview with British Vogue, offering fans a glimpse into the style choices that defined her meteoric rise. When asked about her favourite hairstyle to date, Eilish didn’t hesitate: her green and black roots take the crown.

“Green and black especially felt like such a personal and career-defining look for me,” the 23-year-old pop icon shared. “I felt so exactly who I was at that time.”

The hairstyle in question—neon green roots bleeding into jet-black ends—became instantly recognisable during a key chapter in Eilish’s career, symbolising both her distinctive style and rebellious spirit. It wasn’t just a fashion statement—it was a personal era.

“I really like to romanticise two specific periods in my life: the green roots and the red roots,” Eilish said. “That shade of green was like my colour for so long. I loved it so much. Hair, nails, clothes. It was such a magical period for me, and it was so intense. I felt like I was becoming who I am.”

That statement hits especially hard for fans who’ve watched the singer’s evolution, from her breakout album When We All Fall Asleep, Where Do We Go? to her more recent introspective sound. The green and black look was closely tied to her early public image—dark, edgy, and entirely her own.

“I’d never really seen anything like that before, and it felt really nice to have something that felt like mine,” she said, explaining why the style resonated so deeply. Eilish’s embrace of bold, unconventional aesthetics helped reshape the pop landscape, inspiring countless fans to experiment with their own appearances.

But it wasn’t just about standing out. For Eilish, the hair symbolised a turning point. “It was such a magical period for me,” she said. “It was intense. I felt like I was becoming who I am.”

In a fun twist, fellow superstar Nicki Minaj jumped in with a cheeky question during the interview, asking if Eilish had a name for her iconic green-and-black style. Without missing a beat, Eilish replied, “I’d call it The Billie.”

It’s a fitting name for a look that’s now inextricably linked with her identity. From award show red carpets to her moody music videos, The Billie era wasn’t just a hairstyle—it was a cultural moment.

Since then, Eilish has continued to reinvent her look—platinum blonde, fiery red, deep raven—but she clearly holds a special place in her heart for the era that helped launch her global stardom.

As she continues to evolve as an artist and individual, one thing is clear: Billie Eilish knows exactly who she is—and sometimes, it all starts with the hair.