Nonfiction by Carly Simon.
As far a celebrity memoirs go, this is one of the better ones I've read. I was interested in Carly Simon's life, and she seems to really be honest about her early years here. She is a good writer.
(The book only covers the first part of her life, until maybe age 30-35. Perhaps she plans a second book.)
Still, it's a "celebrity" memoir. By that I mean, it is only as interesting as you already think the person is before you read it. A truly good memoir would make you interested in a person you don't expect to be important.
(See the rest of my thoughts on memoirs in general, if you're intersted.)