Nas' online baby survey
Nas and Kelis are struggling to choose a name for their unborn son, so are thinking of asking their fans for help
Kelis and Nas want fans to name their baby.
The married couple, who are expecting their first child together, are struggling to choose a name for their unborn son and are considering launching an online competition to get some inspiration.
Nas - who has a 15-year-old daughter, Destiny, from a previous relationship - said: "Yeah, we are deciding between a few baby names. It's kind of hard. I've been thinking about kind of putting something online - 'Choose his name'.
"You get a couple stacks for that. We take care of you for that. You win something real. But we're thinking now."
The 'I Can' rapper also revealed Kelis is enjoying her pregnancy and can't wait to become a mother.
He added to MTV: "She is great. She is doing really good."
Kelis has previously spoken about her desire to start a family - but was worried about the effect pregnancy would have on her figure.
The 'Milkshake' singer said: I want a whole bunch of kids. But I want to enjoy my size eight body while I can. I'm actually a little scared about the idea of getting big, so I do lots of Tae Bo!"