Jamie Lynn Spears, Casey Aldridge and their 3-month-old baby girl, Maddie, looked like the picture of familial bliss as they posed outside their two-story rural Mississippi home on Oct. 9. But behind those happy family snapshots, 17-year-old Jamie Lynn has been struggling to shoot down reports she's already pregnant again. "I'm not pregnant," Jamie Lynn said, according to an insider at the shoot. "I don't know where people come up with these things."

For the story behind Jamie Lynn's pregnancy rumors, pick up the latest issue of Life & Style, on newsstands now.