Credit: Facebook

Real Housewives of Beverly Hills stars Kyle Richards and Yolanda Foster might not be the best of friends at the moment on the show on Season 4. So what did the birthday twins tweet at each other on their mutual big day?

Kyle and Yolanda both celebrated their birthdays on January 11, and though they've had their ups and downs on the show, they both sent sweet birthday messages to each other on Twitter.

"❤️Happy Birthday Kyle, I hope that each Day, Love, Health and Happiness will come your way," Yolanda writes early in the morning on their birthday.

Later that evening, Kyle responds, "Happy birthday @YolandaHFoster hope it's magical!"

We love that Kyle and Yolanda are wishing each other birthday happiness! They've been trying to put their differences aside this season, so we're hoping this means that they really have patched things up.

Meanwhile, Kyle posted an adorable photo (at left) of herself smooching husband Mauricio while she wears feathers on the night before her birthday. "Black swan & my love @mumansky18 #bootsybellows #prebirthday," she captions the precious pic. 

Kyle also thanked her fans for their birthday wishes. "I am honestly so touched by all the birthday messages! I read them ALL. Thank you so much! XXOO," she tweets.

Happy birthday, you two!

Source: Kyle on Twitter, Yolanda on Twitter