Pauline Hanson is suing media outlets over the publication of nude photographs she says are not of her.
But News Limited is standing by the photographs, saying they have no doubt they are of the One Nation founder.
The censored photographs, published in News Limited newspapers on Sunday and republished on the Nine and Seven networks, purportedly show a 19-year-old Ms Hanson posing naked in the 1970s for photographer and then boyfriend Jack Johnson.
News reported Mr Johnson said he met Ms Hanson in a Brisbane grocery shop and later took her to the opening of the Pelican Bay Resort near Coffs Harbour in NSW on his Harley Davidson motorbike.
He said the photographs were taken after a night of partying at the resort.
But Ms Hanson, who is standing in the Queensland seat of Beaudesert for the March 21 election, told reporters in the Gold Coast hinterland town on Monday the photos are not of her.
"(Legal) papers have already been served on News Limited, Channel Seven and Channel Nine," she said.
"I am also targeting others who have reported this wrongly and discredited me."
She said she was married and living on the Gold Coast in 1975 and had never worked in a Brisbane grocery store.
"I also state that I do not know of anyone by the name of Jack Johnson, I have never dated an army person - I was happily married to my husband at that time," she said.
She said her own investigations had shown the Pelican Bay Resort hadn't been built at the time the photos were supposedly taken.
And she said that until the age of 30 she had long hair.
"The truth is that is not me in those photos," Ms Hanson said.
Sunday Telegraph editor Neil Breen, who paid $A15,000 ($NZ18,800) for the photographs, said he had no doubts about their authenticity.
"I think there is absolutely no doubt," he told Fairfax Radio.
"I knew on Saturday when I had those photos ... that if I published something like that and they were wrong then I'm in huge trouble."
He said the newspaper's photograph experts had checked the images using computer software before they were published.
"You can see changes in the pixels ... if they've been doctored, and they weren't doctored," he said.
But he admitted there were parts of the story told by Jack Johnson that did not stack up, such as the exact date of the photographs and where they were taken.
Mr Johnson and Ms Hanson will appear on Today Tonight and A Current Affair, respectively, on Monday night to tell their stories.
"It's now a battle of he-said she-said," Mr Breen said.
Premier Anna Bligh and Liberal National Party (LNP) leader Lawrence Springborg both denied claims of a conspiracy by the major parties being behind the photographs.
"I've heard a lot of weird and whacky theories on this campaign but I think that one gets the gold star," Ms Bligh told reporters in Toowoomba.
Mr Springborg said whoever had released the photographs "should be completely and absolutely ashamed of themselves".
