Lindsay Lohan -- The $80k Morgue Rejection

Lindsay Lohan hit the L.A. County Morgue in style this morning ... rolling up in an $80,000 Porsche Panamera ... before being turned away at the door.

Lindsay was spotted at a back entrance ... talking with a morgue staffer who appeared to be informing the actress that she needed to go to a different entrance ... redirecting her to the front of the building.

As we previously reported, LiLo was 40 minutes late ... and the Coroner's Office sent her ass home without credit.