Troubled pop star Britney Spears has sparked reports she is suffering from postnatal depression, after she was spotted reading Brooke Shields' best-selling book about the illness. Shields suffered from postpartum depression in 2003 following the birth of her first child ROWAN. Fortunately, she overcame the condition with counselling and the anti-depressant Paxil, and wrote about her experiences in the 2005 book DOWN CAME THE RAIN. Entertainment website TMZ.com reports Spears has been reading the book during her leisure time at the Promises Clinic in Malibu, California, where she was admitted on 19 February (07). Spears gave birth to her second son JAYDEN JAMES in September (06) and split from her husband Kevin Federline just two months later (NOV06).