Let's make this birthday one to remember.

33 years old (Born on June 18, 1991)

Happy Birthday, Willa Holland! From your unforgettable sass as Kaitlin Cooper on "The O.C."—where you effortlessly stole scenes and hearts alike—to your fierce portrayal of Thea Queen in "Arrow," you've always brought charm, wit, and a dash of mischief to every role. Your talent for delivering sharp one-liners with impeccable timing has made binge-watching sessions endlessly entertaining.

Here's hoping this birthday is filled with laughter, cake (preferably drama-free), and plenty more iconic moments ahead. May the coming year bring roles just as memorable—and perhaps fewer complicated family dynamics than those faced by Kaitlin Cooper! Cheers to you!