"What Alice Forgot" is a novel by Liane Moriarty. It is about a woman who hits her head and forgets the previous decade of her life. Because of this, she wakes up thinking she is 29, happily married and pregnant.
In reality, she is 39, a mother of three and going through a nasty divorce. The novel has the protagonist, Alice, trying to figure out what happened with the aid of her sister. It is a humorous novel about domesticity as well as a look at what one chooses to remember and fights to forget. The novel is 432 pages long.