Nadine Coyle is nervous for Sarah Harding in the 'Celebrity Big Brother' house.

The 32-year-old singer is pleased her former Girls Aloud band mate has decided to enter the famous abode and, although she knows she'll do well because she's a "gentle sweet soul at heart", she has admitted she's really anxious for her.

Taking to her Twitter account, Nadine - who is the only member of the group who still keeps in touch with Sarah - said: "SARAH IS IN BB. She is a such a gentle sweet soul at heart!!! I am so nervous for her but hoping she has a wonderful time!! (sic)"

Sarah entered the house in last night's (01.08.17) launch show and is determined to show the public the "real her" after she became known as the "party girl" of the band.

She said before she went in: "I played up to a caricature when I was in the band, always pouting in photos and being the entertainer. But I'm also emotional and sensitive, not as thick-skinned as people think. I live in the country and I'm older and wiser."

Sarah, 35, spent a period of time in rehab in 2011, while she tried to beat depression, alcoholism and an addiction to sleeping pills.

But the singer has insisted she's a totally different person these days, although she still enjoys the occasional "glass of wine at lunch".

Meanwhile, Nadine recently revealed she has decided she feels ready to give her solo career another stab and has teamed up with the 'Love Machine' girl group's producer Brian Higgins in a bid to get her music in the charts.

There is also talk of the singer - who has three-year-old daughter Anaíya Bell with partner Jason Bell - making a track for her first record since her 2010 debut LP 'Insatiable' with her former band mates.