Lindsay Lohan Puffing Away at Two Packs-a-Day on "Liz & Dick" Set

Her partying days have left Lindsay Lohan with a nasty habit as she reportedly smokes two packs of cigarettes a day on the set of her new film “Liz & Dick.”

The 25-year-old actress may just be under a lot of stress, but according to Us Weekly, a source revealed that the star is constantly puffing on a smoke in between takes.

“Literally every time she finishes a scene she lights up another cigarette," the source explains. "You can hear the crew saying, 'That's cut -- get a cigarette for Lindsay.' "

The source added, "In between takes she would sit on the director’s chair puffing on her cigarettes. Lindsay has been working hard, but without the nicotine she probably could not make it through as she appears stressed at times and they do seem to calm her down."

The stress certainly took its toll as previously reported by GossipCenter, when the “Mean Girls” actress passed out in her Marina del Rey hotel room from reported “exhaustion.”

After the incident, Miss Lohan took to Twitter sharing, “Note to self.. After working 85hours in 4days, and being up all night shooting, be very aware that you might pass out from exhaustion & 7 paramedics MIGHT show up @ your door…. Hopefully theyre cute. Otherwise it would be a real let down.”