Last month, Britain's Daily Mail published a photo of Presley, dressed down and without makeup, eating with friends in Los Angeles, and the accompanying article said she was "growing just like her dad."
Presley's lawyers sued for libel, and on Friday the newspaper printed an apology: "On March 4 we published a photograph of Lisa Marie Presley while she was dining with friends. We suggested she might have an unhealthy appetite similar to her late father. We now accept that the suggestion is untrue and apologize to Ms. Presley for any distress caused."
In fact, Presley, 40, felt forced to reveal her pregnancy secret two days after the article appeared. "I have had to show my cards and announce under the gun and under vicious personal attack that I am in fact pregnant," she wrote on her MySpace Celebrity blog.
"My client is deeply upset and offended by this article, especially as it was widely published just as she and her family were meant to be celebrating her happy news," her legal rep, Simon Smith, said at the time.
Presley – who has two teenagers, daughter Riley, 18, and son Benjamin, 15, with ex Danny Keough – and her husband Michael Lockwood will welcome their first child in the fall.