Over on TikTok, and in true Gen Z fashion, Brown poked fun at the tongue twister that her new haircut created, captioning it “Millie Bobby Bob” and shaking her head from side to side in tune with Out of My Mind by B.o.B, featuring Nicki Minaj.

“Stranger Things” actress Millie Bobby Brown, 21, made a dramatic hair change, swapping her platinum locks for her original deep brunette shade. Quite the beauty risk-taker, the starlet debuted her fresh new tresses on Thursday at the semi-final of the Miami Open, which was held at Hard Rock Stadium.

Millie Bobby Brown is embracing a new era. She’s saying goodbye to blond while she’s at it, because she stepped out with a new hair color.