Nadine Coyle has commented that she thinks Girls Aloud's hair budget could "feed a small country".
The singer believes that there would need to be a large amount invested in the band for them to get back together.
She said to I.D. magazine: "It would depend on everybody's feeling. The money that would need to be invested in it is another factor.
"Between the five of us the hair budget alone was enough to feed a small country. It was through the roof! I think we bought our hairdresser an entire extension on the back of her house on one album campaign. If she wasn't driving a Bentley then she should have been."
Coyle also believes that Cheryl Cole's solo success and appearance on 'The X Factor' will dictate whether the band will reform.
She said: "Cheryl's success is a point for all the rest of us to consider from our own points of view.
"We've got to be realistic about what has happened to Cheryl over the last couple of years."
