MJ's Alleged Love Child Shot Down in Court

The latest woman claiming to be Michael Jackson's illegitimate child will never be able to prove it ... because a judge has shut her down.As we first reported, Mocienne Petit Jackson filed documents back in July -- claiming she's the love child created by Michael and Diana Ross' sister, Dr. Barbara Ross-Lee -- asking for a court-ordered DNA test.

An L.A. County Superior Court judge just ruled ... a DNA test is not in the cards. 

Mocienne also wanted custody of MJ's kids and a cut of the inheritance -- but those claims also went down in flames.

So MPJ's claims involving murder and abduction will never reach a jury ... damn.   Dr. Barbara Ross-Lee, who tells us she's pretty damn sure that Mocienne Petit Jackson "is not my daughter" -- adding MPJ is "delusional" and calls the situation nothing short of "bizarre."

Dr. Ross-Lee also points out a major hole in MPJ's story -- saying it would have been impossible for her to have conceived a baby with Michael back in 1975 ... because she never even met the guy. 

Dr. Ross-Lee says there was a time when MPJ "was really harassing me at my office" -- and was forced to have her employer contact the police to get MPJ to stop.

According to Dr. Ross-Lee, she responded to one of MPJ's emails a few years ago to tell her she was mistaken and to wish her well.

As we first reported, MPJ filed documents yesterday requesting a judge allow her to take a DNA test to prove she's MJ's daughter ... and therefore lay claim to part of his fortune and be granted custody of his kids.
Good luck with that ...
Last night, MJ's brother Randy Jackson also commented on the situation, saying the whole thing "sounds kinda crazy."