Millie Bobby Brown had the perfect response to trolls who told her 'act your age'

Think back to what you were doing at the age of 14 or 15.

Perhaps you were always out socialising with friends, or hiding away trying to keep your teenage angst to yourself, or - if it wasn't that long ago - you might have been on social media 24/7. Whatever you were up to, though, there's a good chance that you were doing your best to seem mature.

At the time, you probably thought you were doing a pretty good job. We all thought we were. Looking back, though, we were most likely a bunch of acne-ridden teens with bad haircuts and big egos. Needless to say, it's a difficult time for most people.

But now take a look at Millie Bobby Brown. She'll be 15 next month, and she is absolutely killin' it in life.

Credit: 1111

So far in her career, the notorious MBB doesn't seem to have put a foot wrong. She's consistently aced her role in Stranger Things, set an excellent example for other kids her age by speaking out on issues of social justice, and proven that there is so much more to her than first meets the eye.

Having achieved so much at such a young age, though, it does sometimes seem that Brown is living the life of someone far beyond her years - and some people on social media seem to enjoy pointing this out to her all the damn time.

In fact, on a recent Instagram post captioned, "write a caption", the teenage star received multiple comments from strangers - most of them adults - telling her to "act her age".

"Take your mother's dress off and go put something age appropriate on that little girls body of yours!!" wrote one Insta user.

"When I was 14, i was in volleyball, having slumber parties yet, babysitting for $20 so I could go to the store with my friends & buy snacks lol," whined another, "Not wasting $4000 dresses and living in multimillion dollar homes with my own photographers & page on Instagram."

But Brown had a clapback for those people. In a since-deleted post, she said "[I know] everyone on my last pic wants me to 'act my age' but quite frankly its my instagram and if i choose to post that picture and you dont like it... scroll past it [sic]".

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And plenty of other fans had her back, too.

"Guys who cares how she dresses?" said one fan. "She's expressing herself how she wants to be, regardless of what others think. Let people be themselves, that's the only way to live in a world like we do today."

"She should be allowed to wear what she wants," added another.

Sure, Brown might not be a typical 14-year-old. She might wear fancier clothes and behave in a more 'adult' way than many of her peers - but let's give the girl a break, shall we? She's still a kid, and yet she's managed to get herself more success than most of us will ever see in our entire lifetimes. Plus, she seems to have stayed humble throughout it all, and she's remained polite even when dealing with trolls online.

So maybe Brown is acting her age - we just need all the other teenagers to follow suit.