Producer LATI GROBMAN has hit out at the "aggressive" paparazzi stalking LINDSAY LOHAN on the set of their new movie LABOR PAINS - branding the commotion they cause "insane".

Lohan's every move is caught on camera by photographers - and it's no different when the 21-year-old is at work.

And Grobman cannot believe the lengths some snappers will go to to get the perfect shot of Lohan.

She tells People.com, "It's the most insane thing I've ever seen in my life. They do things that are very, very aggressive.

"I'm not a producer anymore, I'm a policewoman!"

But Grobman is pleased to be working with Lohan, and admits she has been won over by her professionalism: "The difference between her and the other girls that are naughty in the business is that she's actually talented.

"It's not (like) Paris Hilton and the rest of them. We took a chance. It's good that we did. So far, so good."