Along with posting a family photo, she wrote on Instagram, “Happy Birthday. Love U for Life.”
Kim also posted old photos of Kanye on her Instagram Story.
As for Kim's reaction to the dating rumors, a source told E! News, "Kim has heard the rumors about Kanye and Irina Shayk and she doesn't mind at all. If it doesn't impact her kids, then she doesn't mind if Kanye dates."
Kanye and Irina have known each other for some time, since she has modeled for his brand Yeezy. He has also name-checked her in a song, too!
It is unclear how serious the relationship is.
Irina was previously linked to Vito Schnabel after her split from Bradley Cooper, who is the father of her daughter Lea De Seine, 3.
In April, Irina posted a snap of Lea taken by Bradley. While Lea’s face is not seen, she was also photographed holding onto Irina’s hand while Irina strikes a pose.