"Happy Birthday, baby", she captioned the photo. While actors are usually praised for ditching their appearance to take on a character that looks nothing like them - Ryan savaged his wife for doing just that. "We stay together", explained Blake, who has her hands full with two daughters - James, 2, and one-year-old Ines.
But for her new film The Rhythm Section, the actress has taken on a whole new look-and it's a far cry from her signature red carpet glamour.
For her role, Lively plays a woman seeking revenge for the death of her family, and underwent a complete on-screen make-under, rendering herself unrecognizable with an unkempt short blonde wig, shapeless purple sweatpants, and a drab puffer jacket.
Trolling is normal for this pair, just look at how they wished each other happy birthday.
And, yes, he trolled her on her birthday, too.
So you can't blame her husband Ryan Reynolds for poking a bit of fun at her after seeing the pics.
And earlier in the year, she congratulated him on his TIME Most Influential People nod-with a photo of John Legend. "Happy Birthday to my awesome wife", the actor captioned a post of basically just himself. But Blake and Ryan somehow manage to keep it banterous and light-hearted. "Also, I married my wife online, so it was nice to finally meet her in person", he wrote in the caption. "I could never love anything as much as I love you".