You might think that with so much womanhood around, the Kardashian sisters might have their claws out when their lil' bro's girl moved in with him.




But Alpha-K Kim tells TMZ she's delighted that lil' Rob is taking the next step with Adrienne Bailon, who also happens to be the oldest Cheetah Girl: "Adrienne has become one of my closest friends! I love her like a sister! The whole family has fallen in love with her too!"

As for buzz that Rob and his pussycat doll are married, we're told -- not true.