If you told me a major model turned beauty entrepreneur had been spotted multiple times wearing a zig-zag headband, I'd immediately assume you were talking about Bella Hadid. In one mirror selfie, Bieber lets the matte, black headband push just enough hair away from her face, keeping it otherwise loose and effortless. She recently appeared in a Miu Miu campaign wearing a similarly nostalgic accordion-style headband, suggesting this isn't just a one-off styling choice but part of fashion's ongoing love affair with early-aughts accessories. And considering Miu Miu has more or less become the patron saint of Y2K revivalism in the last few years, the connection feels anything but accidental. The zig-zag headband may have once lived alongside butterfly clips, roll-on body glitter, and primitive flip phones, but in 2026, it actually feels surprisingly modern.