This mother of pop superstar Britney Spears and actress Jamie Lynn Spears is now a busy grandma since Britney gave birth to sons Sean Preston and Jaydn James Federline (in September 2005 and September 2006, respectively), and Jamie Lynn gave birth to daughter Maddie Briann Aldridge in June 2008.
Now that her kids are all grown up with kids of their own, she's written a book — "Through the Storm" — about the ups and downs of familial fame. "A mother is as happy as her most unhappy child," she said during a 2008 "Today Show" interview
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