Angelina Jolie sure knows how to pick them.  Evidently a Vietnamese heroine addict claims to be the birth mother of her newly adopted son Pax. 

Sources say she will likely come after the Jolie and her boyfriend Brad Pitt in hopes of making a few bucks.

Pax's alleged grandfather has even come forward denouncing the lady's actions.  He called her a "heroin addict" who is in "a bag of trouble."

Pax is Angelina and Brad's third adopted child.  Previous reports claim that his birth parents were unable to be located.