Lynne Spears has a lot to talk about -- from Britney's issues to Jamie Lynn's unexpected pregnancy, mama is telling all in her new memoir, "Through the Storm: A Real Story of Fame and Family in a Tabloid World," reports Us Weekly.

The book "will get into the dark period of Britney's life -- from a mother's eyes," said Curt Harding, a rep for publisher Thomas Nelson. "I think people will be surprised about who Lynne is," he adds. "That's what I've gotten from it so far. I think she's stronger than people give her credit for."

The mother of three (there's also son Bryan), has worked on the memoir "for at least a year," but took time off to help her daughters -- after Britney was hospitalized and teen Jamie Lynn found out she was pregnant. "She said, 'I can't write a book right now, I've got to take care of my family,'" explains Curt.

"Through the Storm...(etc.)" is expected to hit bookstores in September.

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