It’s not every day that a young woman turns 19, and for actress Elle Fanning (whose bubble gum pink hair is our summer inspo), that day just so happens to be today. It’s a fact that her big sis, The Brimstone star Dakota Fanning (did you see her mermaid premiere dress?) who turned 23 back in February, knows all too well.

In honor of the momentous occasion, the actress took to Instagram to pay homage to her younger sibling with a post so sweet, it had us tearing up.

The elder Fanning’s post showcased her flaxen-haired family member in her younger days, captioned with an open letter of pure admiration. “Dear Elle,” it began. “You are fearless and free, and my admiration for you has grown with every year that has passed. I am proud to be your big sister and ‘teacher,’ but I am also your humble student in so many ways. When I look at you, I do a double take, because I still see this wild-eyed, wild-haired psycho. But I also see a strong young woman. No one will ever be more proud of you than me. I love you and wish you the best year yet. Happy birthday Angel. Love, Cody.”

WOW. If that doesn’t make you want to immediately whip out your phone and call your own sis (or closest gal pal, should you be without one), we just don’t know what will.

We love the Hadid sisters and all, but this may have just cemented the Fannings as our new fave sibling duo.

Happy birthday, Elle — here’s to many more!

Who are you fave Hollywood siblings? Cast your vote over @BritandCo.

 (h/t Hello Giggles; photo via Mike Windle/Getty)