Sarah Harding thinks motherhood "really changed" Nadine Coyle.

Sarah Harding

Sarah Harding

The former Girls Aloud singer never expected the Irish star to be the first of the group to have children but is impressed at how "maternal" her friend - who has two-year-old daughter Anaiya with partner Jason Bell - is and how quickly she adapted to life as a parent.

She said: "Nadine and I were in touch recently - she's in LA at the moment - I haven't seen her daughter since she was probably a couple of months old.

"I honestly never expected Nadine to be the first one to have a baby. But I just never saw her like that and then once she had Aniya, I just couldn't believe how maternal she was. Honestly, it really changed her."

Though Sarah and Nadine have stayed friends, they are not planning any musical collaborations at the moment.

Sarah, 34, exclusively told BANG Showbiz: "We're not working together on anything, we're all doing our own thing at the moment but when she's over we're going to meet up, definitely!"

Since the band went their separate ways in 2013, Nicola Roberts, Cheryl Fernandez-Versini and Kimberley Walsh have remained close, but Sarah and Nadine are no longer in regular contact with them and have not been invited to events such as Nicola's birthday party and Kimberley's wedding to Justin Scott.

Of the division, Sarah said recently: "Nadine lives in LA, the other three do their own thing and that's just how it is.

"You have got to remember the girls and I spent so much time together when we were in the band."