Doing business with porn stars isn't cheap. Bow Wow is finding that out the hard way.

According to TMZ, a federal judge has ordered him to pay French adult film actress Celine Tran AKA Katsuni $79,346.07 in damages and attorney fees for using footage of her in one of his videos.

The catch? He never asked for her permission.

The video in question is Bow's "Drank In My Cup," which purportedly uses footage of Katsuni that was originally filmed for French band Electronic Conspiracy's "Conspiracy Strip Club."

He reportedly never even replied to her initial lawsuit.

Watch Bow Wow "Drank In My Cup" Video

Watch Electronic Conspiracy "Conspiracy Strip Club" Video

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