Demi Moore set to publish memoir in 2012

Demi Moore poses during a photocall to promote the movie 'Happy Tears' at the 59th Berlinale film festival in Berlin, February 11, 2009.

NEW YORK (Reuters) - Hollywood actress Demi Moore is all set to go public in a memoir with details of her three marriages and showbusiness career spanning three decades.

HarperCollins said on Monday that it had bought world rights to a memoir by the actress that will cover her life and career. The book, as yet unnamed, is scheduled for release in 2012.

Business news website Crain's New York.com quoted unidentified publishing industry executives with knowledge of the deal saying HarperCollins had agreed to pay more than $2 million for the book.

HarperCollins spokeswoman Tina Andreadis declined to comment on the reported price tag.

Moore, 47, has starred in a list of movies including "Ghost," "Indecent Proposal," and "A Few Good Men," as well as some widely-panned films such as "Striptease" and "G.I. Jane."

The actress has in the past acknowledged a troubled upbringing and difficult relationship with her alcoholic mother, Virginia King, who died from a brain tumor in 1998.

Moore was once one the highest paid actresses in Hollywood and in 1991 controversially appeared naked and pregnant on the cover of Vanity Fair magazine.

Moore was married to singer-songwriter Freddy Moore for five years from whom she took her surname before marrying actor Bruce Willis in 1987, a marriage that lasted 13 years and resulted in three daughters, Rumer, Scout and Tallulah.

She married actor Ashton Kutcher, 32, in 2005.

(Writing by Belinda Goldsmith, Editing by Michael Perry)