Need to Know, Book title driving me Bonkers >:|?

Ok, I posted once before but never got an answer. There was this book I read a few years back about a mid century movie star named Bunny Thomas who went from a molested childhood sensation to an adult star with a slutty nature and always seemed to be broke. Her mother Lavender Thomas was her manager or something and she was obsessed with keeping her daughter famous and successful, she was pretty much willing to die for it. Bunny ended up having a daughter named Chelsea who was grounded and very smart blah blah blah... Does this book sound familiar to anyone???? The author was a woman but I can't remember anymore. :/