Dannii Minogue is reportedly horrified that pictures of her in a lap dance club have been sold to a Sunday newspaper.
Security footage from London's Puss In Boots apparently shows Dannii enjoying a naked lap dance.
A guest at the club told the News Of The World: "Dannii was having the time of her life and didn't care who saw.
"She wasn't in a private booth or the VIP area, she was on the dance floor.
"I can't believe how far they went. It was more like a porn film.
"There were hands and tongues everywhere - I thought it was going to turn into a full-on orgy."
Dannii is now said to be considering legal action against the paper.
A spokesman for Ms Minogue has said the footage just shows a "harmless girls' night out".
He added: "They were having a great laugh, but only that."
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