Nicole Scherzinger

The singer is being sued by the band's choreographer and founder Robin Antin for allegedly reneging on a previously-announced tour, it emerged this week.

But Scherzinger's lawyer has now said any such obligations "simply do not exist".

Howard King called the legal case "a desperate attempt to divert blame".

"Robin will fail in her efforts to trade on Nicole's hard-earned success to pull herself out of a deep financial hole she has created by her own poor business and professional decisions," Mr King said in a statement given to the BBC.

The ex-Pussycat Doll, 38, is back on the panel of The X Factor this year.

She told the Sunday Mirror that she had made sacrifices in her personal life.

"Look at me? I'm not married and I ain't got no kids yet. Of course work has come at a sacrifice. I've missed out on life," she said.

But Nicole said that she had not expected to have children by now.

"I see a vision of what I want as an artist.

"Now I'm going to the top of that mountain. When I get there, then I'll have time for a family, and kids," she said.