Just after celebrating her 26th birthday with her new girlfriend, French singer SoKo, Kristen Stewart arrived stateside today rocking a bright new ‘do — one that you have to see to believe.

The usually brooding Twilight star has almost always sported a dark look to complement her attitude. Although she’s a natural blonde, her hair has traditionally been a deep brunette shade, with honey-colored undertones. That all changed this weekend, however, when the star, channeling a throwback grunge style, debuted a shock of white-blonde hair sticking out from under a messy beanie (leave it to K-Stew to make hat hair look chic) after a flight home from Paris. Photos of the star playing drums at her birthday party show the look in all its glory.

As recently as last month, Kristen was still rocking the brunette look, and we’re wondering if her new hair is inspired by her budding relationship with SoKo or if it’s for a movie role. Either way, we’re loving this ’90s-inspired grunge look — and wondering what throwback jam she learned to play at her birthday party.

What do you think of Kristen’s messy cool bleach out? Tell us @BritandCo!

(Feature image via Nicholas Hunt/ Getty)