Gwen Stefani has been helping Adam Levine and Behati Prinsloo pick out potential names for their unborn baby.

Behati Prinsloo and Adam Levine

Behati Prinsloo and Adam Levine

The couple aren't expected to welcome their daughter - their first child together - into the world for another few months but they're already trying to come up with some monikers for her and have turned to the 'Rich Girl' hitmaker for advice.

Gwen - who struck up a bond with Adam while working on 'The Voice' together - said: "I'm not a very good advice giver but I have definitely been watching [Behati's] belly grow and I'm so happy for them. I'm so excited. Adam keeps texting me, 'What about this name? What about this name?' And then just all that kind of stuff. It's just really fun."

And it's not just names the 46-year-old beauty has been helping them out with, as Gwen - who has three children Kingston, nine, Zuma, seven, and Apollo, two, with her ex-husband Gavin Rossdale - has also been giving the Victoria's Secret Angel the lowdown on what to expect.

Speaking to 'Entertainment Tonight', Gwen said: "It's fun because I've had so many kids. I'll be like, 'And then this happens. And then this happens. And then wait, this is what's going to happen.' It's fun."

Meanwhile, the 26-year-old model has seemingly had an easy pregnancy so far but is struggling with her cravings.

Adam said recently: "She's eating a lot of watermelon. A lot of watermelon. Because, you know, they get random cravings for stuff and it's just like, so much watermelon! ... I eat a lot of stuff. A lot of stuff."

And the 37-year-old Maroon 5 singer can't wait to meet his new bundle of joy in a few months' time but, in the meantime, is keen to spoil his beautiful wife.

He added: "I'm going to be a dad. S**t, I'm excited. I'm going to be a f***ing dad. I'm going to spoil Behati ... Kid's not even out yet. Can't be spoiling a kid before a kid gets out."