Actress Demi Moore has reportedly signed a six figure book deal to discuss her divorce from Ashton Kutcher.

The Hollywood star apparently reached an agreement with publishers HarperCollins to write her autobiography shortly before visiting the Caribbean for Christmas.

Executives are said to have "more than doubled" her planned advance following news of her separation from Kutcher, which was announced back in November.

"We already had a great book outline from her in which she said she would write about overcoming her alcohol and cocaine addictions, her difficult relationship with her mother and how she was born cross-eyed and had to wear an eye patch at school," a source told the Daily Star Sunday.

"Now she's going to blow the lid on her six-year marriage to Ashton, so what would have been a best-selling book is going to become a blockbuster."