Sarah Harding thinks Kimberley Walsh will be a "bossy mum".

She said: "We were all shocked that Nadine was the first because we thought it'd be Kimberley. I think Kimberley will be the bossy mum, whereas Nadine has that LA thing going on."

While the 32-year-old star hasn't seen Nadine - who lives in Los Angeles with her NFL player boyfriend Jason Bell - since she gave birth, Sarah says the Irish singer is having a fairly easy time as a new mother.

She revealed: "I haven't met her baby yet, but she's getting on very well, surprisingly! She's really laidback, and so is the baby - she sleeps through the night. She must have had a chilled-out pregnancy to have such a chilled-out baby!"

Sarah, who is in a relationship with DJ Mark Foster, admits she isn't ready for children herself as she wants to focus on her music career.

She added to new! magazine: "I'm very focused right now and so is Mark. I'm not going to deny that I'm 32 - I'm embracing that fact. But my mum was in her late thirties when she had me and I think a lot of women are dominant in the workplace these days."