The National Enquirer is sticking by it’s mid-July Jamie Lynn Spears pregnancy scoop. The veteran snitch mag claims the youngest of the Spears sister is much further along than her reported twelve weeks of pregnancy and is set to give birth to a bouncing baby girl in March 2008.

A source tells The Enquirer:

“Jamie Lynn learned she was pregnant in late July, but her mother Lynne didn’t want anyone to know.”

“To keep it quiet, Lynne whisked Jamie Lynn from California back to her home in Kentwood, La. as soon as she finished filming her Nickelodeon TV show ‘Zoey 101′ in August.”