Is the story mommy dearest a true?

Yes, the story of Mommy Dearest is a true story. It is based on the life of Christina Crawford, the adopted daughter of actress Joan Crawford. The book, written by Christina Crawford, details the abusive and neglectful upbringing she experienced at the hands of her mother. Mommy Dearest was a bestseller and has been adapted into several films, including a 1981 movie starring Faye Dunaway as Joan Crawford.