To date, perhaps the most significant number in Millie Bobby Brown's life has been Eleven.
And she can now add 18 to the mix.
The actress and cosmetics mogul-in-the-making is celebrating her most grown-up birthday yet on Feb. 19, and while it seems as if only yesterday she was just a 13-year-old with a shaved head...
Well, such is life in the Hollywood Upside Down.
But with the long-delayed fourth season of Stranger Things only recently, finally, getting its release date(s), with volume one unfolding May 27, to be followed by volume two on July 1, you're not alone in feeling that time has been playing tricks.
And yet Millie can drive and everything now. She knows, though, that maybe it's been a little strange for fans who got to know her as a kid star to accept that she's, well... not a kid anymore!
"I'm only 17, but at the end of the day, I'm learning to be a woman. I'm learning to be a young woman," she told MTV News last March. "So being a young girl, people watch you grow up, right? And they've almost become invested in your growth and your journey. But they aren't ready to accept the fact that you're growing up."
Though she was always a budding style maven in our books, Millie said that her clothing choices were one of the things that prompted a lot of unnecessary chatter.
"So I wear a crop top," she explained, "and people are like, 'She's 10.' I'm like, 'No...I am 17.' That's a thing that girls do. Or I wear high heels. Or I wear an outfit to an award show and they're like, 'She looks 50.' No, it's because you've watched me since I was 10. That's why you think that."
To further help you get used to the fact that the Florence by Mills founder, Enola Holmes producer and star, and award-winning Stranger Things actress is now 18, here is the requisite number of fascinating things to know about Millie Bobby Brown's life so far:
Although it doesn't sound likely, Millie emphasized to MTV, "I don't want anything to hold me back," she proclaimed, "which I think is the most important thing...I want to evolve."
So far, so good.
(An earlier version of this article was published Feb. 19, 2020, at 3 a.m. PT)