Lindsay Lohan has come under fire from a crew member on Herbie: Fully Loaded, who adds weight to film boss James G Robinson's claims she is "irresponsible and unprofessional".
In a stern letter that threatens legal action against the young star, the CEO of Morgan Creek Productions last month branded Lohan's recent absences from new movie Georgia Rule as the behaviour of "a spoiled child".
And the anonymous movie insider tells PageSix.com, "Her behaviour (on Georgia Rule) is exactly the same inconsiderate stuff she pulled on the Herbie production.
"She stayed out all night, and then the doctor announced that Ms Lohan had asthma the next day. She played the exhaustion card a couple of times.
"She called in sick one day and she is across town (spending) a day with her then-boyfriend Wilmer Valderrama."
The 20-year-old's spokesperson Leslie Sloane-Zelnick hits back: "Until this person goes on the record like the producers of Morgan Creek did and attaches a face and name to their charges, I am not going to reply. Stop hiding behind blind anonymity!"