Millie Bobby Brown responded to critics who think she looks older than her 21 years thanks to her new platinum blonde hair in a post on her Instagram on Thursday, Feb. 27.

The British actor’s unexpected new look has sparked speculation that she may portray Britney Spears in an upcoming biopic.

Millie Bobby Brown reacts to critics who say she looks older than her age with her new blonde hair. On Instagram. the 21-year-old shared a screenshot of a 'British Vogue' article with the headline, 'No One Cares How Old You Think Millie Bobby Brown Looks,