With the Kardashians you just never know what they might be thinking behind closed doors and that's why their fans can't help but wonder if they are truly being sincere this time around. There's a new rumor that says Kris Jenner, Kim Kardashian and the rest of the clan have "changed their tune" as they are now saying that Blac Chyna has been like a "miracle" for their brother Rob, as she's managed to help him turn his life around.

In fact, Rob has slowly been losing weight now that he is engaged and expecting his first child with the model. Even though the Kardashians have kept quiet about their baby news, sources say that they are finally warming up to Chyna, who also has a 2-year-old son King Cairo Stevenso with rapper Tyga (who is dating youngest Kardashian sister Kylie Jenner).

According to Heat Magazine on Thursday, Khloe even said, "Like, don't we kind of think it's a miracle that Rob, who doesn't even show up to Christmas for the past three years, literally he wouldn't leave his room, but the fact that now he's created a Snapchat, the fact that now he wants to be so public blows my mind."

She added, "He hasn't been like this in so long that even though there's been some drama. If this is what it takes, then I don't care who he's dating. I'm just so happy that he's feeling better about himself."

What's more, Kim was even spotted accompanying the couple during their last visit to Chyna's OBGYN doctor, even though she's yet to publicly congratulate her. So far, Chyna has not revealed her due date.

Tags: blac chyna rob kardashian