Nicole Scherzinger: `Pussycat Dolls made me into a woman`

The 32-year-old singer said that her years with the group helped her mature into adulthood, and dismissed speculation that her time with their time together had been riddled with arguments and fall-outs.

She told the Daily Mail, 'People thought we had non-stop catfights, but those girls will be my sisters for life.

'We slept, breathed, sang and shared the same tiny space together for years, and honestly there was no time or room for fights.

'I went from being this shy little girl with hang-ups about wearing a bikini to this creature who performed in the teeniest clothes with total confidence.

'Being a Pussycat Doll turned me from a girl into a woman.'

She continued, 'Being a Pussycat Doll was like being an Olympic athlete who has to perform every day for years without sleep.

'I spent four years with these superwomen and it was the toughest thing I've ever done. We performed and performed and performed – one night in one country, the next in a new country. In between we were travelling, rehearsing, learning new routines – there was often no time to sleep or eat or call your family.

'It was utterly brutal and the best training camp for anyone who wants to work in this business.'