Millie Bobby Brown Celebrates Her 15th Birthday on Instagram

Today is Millie Bobby Brown‘s 15th Birthday!!!

The Stranger Things actress is celebrating big on her Instagram today (February 19) with a cute little video of her holding up balloons.

“February 19th, 2004 = 15 years old 👼✨,” she captioned the cute vid.

One of Millie‘s BFFs, Lilia Buckingham, shared a sweet message for her birthday too.

“I may have only met you three years ago, but it feels like I’ve known you forever,” she wrote on her Instagram. “Thank you for being my escape, without you, my world would be a much darker place. happy birthday mills❣️”

So cute!

See both Instagrams below!