Prince Jackson — Face Off with Cops … GUNS OUT

Prince Jackson was fully armed yesterday during a brief standoff with the LAPD … wearing a revealing bright green Euro-trash muscle tee that completely exposed his boyish pythons.

The photog on scene says 16-year-old Prince — who”s only been driving a few months — was given a warning for illegal strobe lights on the grill of his new truck.  Prince removed them and went on his way.

It”s a far cry from the boy Michael Jackson shielded for years.

But his fashion choices remain questionable.