With her little sis about to pop, Britney Spears has her sights set on home this weekend.

Sources on the scene tell E! News the "Toxic" singer—with dad Jamie vigilantly in tow—is back in Louisiana today for Jamie Lynn's baby shower, which is taking place Saturday at Lynne Spear's home in Kentwood.

Britney is said to be bunking at mom's house, where security personnel have set up shop and police are blocking entrance to their street.

This is Brit's first trip back to her hometown since last fall, when she became embroiled in her current—and, can you believe it, increasingly less bizarre—custody battle.

Which, as it's so wont to do, will require Britney's presence back in Los Angeles on Tuesday, when she's expected to attend the latest custody hearing in this ongoing process, this one to address the results of a court-ordered 730 psych evaluation.

E! News caught up with Kevin Federline legal eagle Mark Vincent Kaplan last night and he filled us in on what to expect in Britney's near custodial future.