Pregnant Jamie Lynn Spears Hosts Super Bowl Bash!

Again, file this one into the "Probably Not True But Funny Celebrity Gossip You Should Read For Entertainment Purposes" category.

Star Magazine needs to start signing some of its writers to contracts to write novels, because some of the stuff they make up is great.

With her mother, Lynne Spears, in L.A. to be near Britney (who's getting treatment at the UCLA psych ward for bipolar disorder), Jamie Lynn Spears supposedly took advantage of her freedom and threw a Super Bowl party!

The pregnant Jamie Lynn Spears and Casey Aldridge, the boy she says is her baby's father, had a bunch of friends over to "Serenity," her mother Lynne's Kentwood, La., mansion, for an impromptu bash! With booze!

Casey Aldridge and Jamie Lynn Spears: Pregnant and partying?

Shortly after 2:00 p.m. on February 3, a Jeep SUV with Ole Miss University and Delta Delta Delta sorority decals on the window pulled up to the gates and five college age women got out. Gotta pre-game early!

"They were all laughing. They looked really happy and excited to be at the house, like they hadn't seen Jamie Lynn in a while," says a witness.

Earlier, the Zoey 101 star (Jamie Lynn Spears' baby bump was kept hidden under a baggy sweatshirt) drove with Casey Aldridge to Wal-Mart.

Not the one close by in Amite, La., but the one 35 minutes away in McComb, Miss., where Britney Spears was born. Why the mini-road trip?

The McComb store sells alcohol on Sundays.

"Maybe one of them has a fake ID," a source says.

Mmm hmm. Maybe Jamie Lynn Spearsis going to run away to Los Angeles and live with her dad, Jamie Spears, too. Or not.