Whether she's putting in reps to suit up as a Marvel superhero or crunching equations to play a scientist on Lessons in Chemistry, Brie Larson is the sort of actress who commits to her roles. Her surprise dramatic haircut—a brunette pixie cut, hard-launched on Instagram yesterday—is just the latest proof.

On Monday, the actress Brie Larson shared a selfie, and a dark brown pixie cut was in place of her signature long blonde locks. How seasonal! We know to beware a bob, but is a pixie cut the next thing set to take over our collective hair minds,