The actress posted about the big day on Instagram while sharing her appreciation for the BBC show Killing Eve, and its star Jodie Comer.
Alongside screengrabs from one hilarious scene in the cat-and-mouse spy show, Blair wrote that she loves Comer’s snarky killer character.
“And I am in love with #Villanelle. It’s my birthday. I’m allowed,” she wrote. “@jodiemcomer you really killed it