Denise Richards has revealed she and Charlie Sheen went through "one of the worst divorces".

The former couple - who have two daughters, Lola, six, and seven-year Sammy, together - ended their marriage in 2006 and although Denise claims they once shared a "beautiful love story" she admits it all descended into bitterness at the end.

Explaining her decision to write a memoir - which is being released next month - Denise has said she wanted to reveal what it was like to "struggle" through the divorce because "we had one of the worst divorces so if we get into a good place, that's great".

Speaking at the Time for Heroes Celebrity Carnival Sponsored by Disney to Benefit the Elizabeth Glaser Pediatric AIDS Foundation, she added: "People have only gotten the rotten stuff so, you know, there was a beautiful love story between he and I and I know that it went the way it went, but I talk more about how I felt during that time because I feel like a lot of women can relate to that, going through a divorce and custody and being a single parent and trying to work and all of that stuff".

While Denise, 40, has tried to protect the couple's kids from hearing about their acrimonious divorce and their father's recent troubles - including being fired from sitcom 'Two and a Half Men' after a public spat with show creator Chuck Lorre and stints in rehab to be treated for drug abuse - she is worried that won't be possible as they get older.

She said: "They are in kindergarten and first Grade so, so far they are okay, but I don't know because that could change as kids get older and more aware. But today we are good."