Jamie Lynn and Baby Go Home

While big sister Britney was busy causing chaos at LAX, little sis Jamie Lynn was busy packing up to leave the hospital to start her new life with her baby.

Just two days after giving birth, Jamie Lynn left the Mississippi Southwest Regional Medical Center in McComb with her fiancé Casey Aldridge.

The couple left the hospital in her white Range Rover around 1:40 a.m. and had to receive a police escort home. Those pesky paps never sleep!

Mother and baby are expected to lay low for a while, so don't expect to see pics of the latest Spears baby anytime soon.