Brit Won't Be Second-Time Auntie for a While

Three-month-old Maddie Briann Aldridge is gonna have to wait to have a lil' baby brother or sister, because Jamie Lynn Spears is not pregnant, y'all!

While several reports are claiming Jamie Lynn is preggers again, an unimpeachable source tells TMZ Britney's baby sis does not have another bun in the oven.

Someone tell Lynne Spears and get her down from the ledge. Bless her heart...