Federal authorities are searching for a photo of Britney Spears' little sister Jamie Lynn breastfeeding her baby, daughter Maddie Briann.

According to law enforcement officials, there is currently a pornography investigation involving a 'minor' after a photo of Jamie Lynn Spears exposing her breast to feed her child was stolen.

Our friends at TMZ scoop: Federal and local authorities are on the hunt for someone peddling 12 pics of Britney Spears, Jamie Lynn, daughter Maddie and baby daddy Casey Aldridge. The pics were taken on Casey's digital camera. We're told he took the camera card to his local Wal-Mart in Louisiana for copies. Law enforcement believes someone at the Wal-Mart may have made extra copies, then tried selling them.

So what will happen if the thief who stole the pictures tries to sell them? Well, possible child pornography or pornography distribution violations may land that lucky individual in the slammer.

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