And Nadine has also taken a swipe at Cheryl for not supporting Sarah...

Sarah Harding had a pretty tough time in the CBB house after finding herself in a load of fiery arguments with her fellow stars (namely a Ms. Jemma Lucy) over her romance with Chad Johnson.

Luckily, she managed to prove everyone wrong by leaving the reality show as the champion…

But after facing a load of criticism on the outside world, there’s one pal Sarah has been able to count on – and that’s former Girls Aloud bandmate, Nadine Coyle.

Read: All the Latest TV news 

The 32-year-old jumped to Sarah’s defence during her time on the show, describing her as a ‘natural being’ that ‘doesn’t need a filter’.

However despite sticking up for her BFF, it turns out Irish beauty Nadine wasn’t so keen on Sarah joining the line-up and actually begged her not to go into the house.

Sarah faced a lot of criticism in the CBB house (Photo by REX/Shutterstock)

Speaking to The Sun, the singer revealed Sarah called her a few weeks before entering the house to let her know she’d signed up for the series.

‘I was petrified,’ Nadine said.

‘She called to tell me she was doing it and my immediate thing was, “Don’t. Absolutely not. Why? Stop this immediately. Retract, retract. Don’t do it. Just don’t do it. We’ll go on a holiday. I’m going to Spain, come”.’

More: Ooh! Cheryl DID watch Girls Aloud bandmate Sarah Harding on Celebrity Big Brother

Not exactly the reaction Sarah was hoping for…

‘She wanted to do it. And if she’s got it in her mind she’s going to do something, she’s going to go and do it,’ the singer continued.

Nadine might have had her reservations, but the star revealed that she was the only one from the band to wish her luck ahead of her stint on the show – with Cheryl even unfollowing Sarah on Twitter in the lead up to her appearance.

Although it looks like the lack of contact from new mum Chez, as well as Kimberley Walsh and Nicola Roberts came as no big shock to the star, as she added: ‘I’m not surprised.

‘If you don’t like somebody, just be genuine about it. You don’t have to be anything else. I don’t think Sarah’s surprised either, it’s to be expected.’

Eeeek! We won’t be crossing our fingers for a Girls Aloud reunion any time soon, then…