The couple stunned family, friends and fans in January (16) when Rob and Chyna confirmed dating rumours, and their whirlwind romance turned into an engagement last month (Apr16).

And just as that news was sinking in, the pair announced baby news earlier this month (May16) after the mum-to-be revealed she was expecting Rob's kid.

But Dip It Low singer Christina, who has been friendly with the hip hop model for many years, is more happy than shocked by the big news, insisting she's glad Rob has found love with her pal.

"I'm happy for both of them," she tells America's People magazine. "It's great to see Rob back out and about. And understandably so, because she's got an amazing personality. And she's a beautiful girl. It's just such a great fit."

Milian came to Blac Chyna's aid when she asked her for advice during her first pregnancy in 2012.

"I was actually around with her first pregnancy, and she was asking me questions about it," Christina says. "So it's cool to see it come back around. She's a great mother overall. I went to her son's last birthday party. She throws great parties for her kids. She's going to have a lot of fun, I think, having two (kids)."

But not everyone is thrilled about the baby news, if you believe the gossip surrounding the Kardashians - Rob's family members were reportedly sceptical of Rob's romance with Chyna, but in a recent episode of TV show Keeping Up With The Kardashians his sisters Kim and Khloe credited her with bringing their reclusive brother out of his shell.

"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," Khloe said to her sibling.

Kim replied, "She gave him confidence, more power to her. After Rob and Blac Chyna started dating, Rob is now, like, all over social media and, like, out and about."