Move aside, Jayden James and Sean Preston -- there's another boy joining the Spears clan. Jamie Lynn is having a baby boy! Britney and her lil' (except around the midsection) sister shopped for light blue items at a baby goods store recently, a source tells MSNBC. "Britney originally said the items were for herself," the insider says, which seems to be a cover for Jamie Lynn because "none of the items could have been mistaken for being purchased for the two kids Britney already has."

Good thing, too! The Spears family has messed up enough pop tarts that they definitely don't need another little girl to throw into the spotlight…