Lindsay Lohan was in a bad car accident and is in the emergency room at an L.A. hospital ... TMZ has learned.
Lindsay Lohan was driving her black Porsche on Pacific Coast Highway when it collided with an 18 wheeler. We're told the Porsche is totaled. The passenger window was shattered and the rear bumper was fully off her car.
We're told she did not go to the hospital by ambulance, although we are told an ambulance was called to the scene.
No word on her condition, although we're told she seems ok. Doctors are performing tests.
UPDATE: Lindsay was driving the car, and we're told she's saying that the accident wasn't her fault, claiming the 18 wheeler cut her off.
Damn, I hope she's okay. That's really serious. 
I hope she's totally fine