Sunday was a cause for celebration for Grey’s Anatomy fans: Ellen Pompeo, the woman responsible for bringing the dark and twisty Meredith Grey to life, was born on November 10, 1969. And although she turned 44 this year, our favorite show’s namesake is looking more fabulous than ever.

We're not the only ones excited about her big day — so are her Grey’s castmates! They showed their love for her on Twitter all day Sunday, and their tweets — and Ellen’s responses — made us fall head over heels for this cast even more than we already have.

Let’s check out some of Ellen’s birthday greetings:

From Gaius Charles (Shane Ross): “Happy birthday @EllenPompeo hope its the best one yet!"

Ellen’s response: “You know how it goes Gaius ‘ain’t no party like a west coast party.’”

From Sara Ramirez (Callie Torres): “HAPPY BDAY ELLEN!”

Ellen’s response: “Thank you boo.” (Um, can Ellen call us boo in reply to our tweets?)

From Jessica Capshaw (Arizona Robbins): “Happy birthday to sassiest and sweetest Scorpio…”

Ellen’s response: “Just so you’re aware… I may continue to celebrate all week long!!” (Fine by us, as long as you keep us updated on Instagram!)

From Camilla Luddington (Jo Wilson): “Happy birthday hottness!!!! #queenofgreys.”

Ellen’s response: “Takes one to know one!! Thank you lovely.”

From co-executive producer and co-showrunner Tony Phelan: “Happiest of Happy Birthdays to @ellenpompeo!!”

Ellen’s response: “Thank you!!! So glad you didn’t ask me to jump out of a plane.” (Tony’s skydiving in his Twitter pic)

And, drumroll please… the best birthday tweets of all were courtesy of McDreamy (Patrick Dempsey) himself. He’s been visiting San Francisco this weekend, so when Patrick wished Ellen a happy birthday, her response was, “Are you still up there in wine country? Gee I’m thirsty,” in true Meredith Grey form.

And when Patrick didn’t pick up on Ellen’s hint (she was totally grubbing for an alcoholic birthday present!), Ellen was sure to press the topic again. “So what I think you’re trying to tell me is ‘no wine for you,’” Ellen said. “No worries. I’ll get a bottle and write… from Patty… on it.’”

And because these two are so awesome, when Patrick assured her, “Champagne for you! Nothing but the best!’ Ellen was sure to reply, “Life is one big cocktail party!”

Meredith would totally approve — and then she’d ask these two to pass the tequila.

Nothing has ever made us want to be part of the Grey’s Anatomy cast like these tweets! Share your belated birthday wishes for Ellen below!