(by Sarah Muller)
It's one thing to steal your sister's diary to see all her dirty secrets. It's another to write a tell-all book filled with dirty secrets for the entire world to read.
Madonna's baby brother, Christopher Ciccone, is now writing a juicy memoir about his famous sibling. An imprint of Simon & Schuster plans to release 350,000 copies of "Life With My Sister Madonna" in mid-July. Ciccone has been working alongside Wendy Leigh, who has written celeb bios on Liza Minnelli, Grace Kelly and Arnold Schwarzenegger.