Lindsay Lohan is obviously sticking to her promise of making a career comeback - co-stars in her forthcoming movie Labor Pains have branded the star's on-set behaviour "perfect".The actress and former partygirl was slammed by bosses on her previous movie, Georgia Rule, after she was continually late to set - with studio chief James G. Robinson becoming so infuriated he wrote a letter to the star attacking her unprofessionalism.But the actress seems to have stayed on her best behaviour while shooting the film, with co-star Jay Thomas claiming Lohan has been a dream to work with.He tells E! Online, "I'm just guessing, but someone must have said to her, 'You better get your act together or else."She was perfect. And she's a really good actress. I'm not just saying that because of the movie, but she really happens to be talented, and it looks like she's OK now".

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