JAMIE LYNN BABY BASH

As expected big sis Britney Spears showed up sans entourage to lil' sis Jamie Lynn Spears' baby shower in the backwoods of Louisiana.

About 30 people-- no boys -- showed up at the Spears family compound in Kentwood to fete the future celeb-u-babe.

Sheriff's deputies were on hand to make sure things didn't get too rowdy and rambunctious.

They didn't.

According to a source, Jamie opened every present. AWWWW.......

Rumors has it that the 17-year-old Jamie Lynn  is expecting a girl courtesy of fiancée Casey Aldridge.