The E! star retweeted an adorable family collage posted by sis Kendall Jenner. She also shared hairstylist Jen Atkin's pic depicting her as "a huge cat & grannie lover!"
Kimmie also retweeted pal Sheiva Ghasemzadeh's shot of the two "churllls" making their best kissy faces for the camera.
The rest of Kim's fam, of course, wished her a happy birthday on their social-networking sites.
What we really want to know, though, is what Kanye got our girl for her special day!
A new season of Kourtney & Kim Take Miami premieres in January 2013.