Reveling in her own excess! LINDSAY LOHAN watched her own movies while in rehab and “forced” others to join her – insider.

“There was more than once when Lindsay would rent or buy a movie on iTunes that she’d starred in,” an insider who attended rehab with Lilo told RadarOnline.

“She basically forced me to watch that crappy movie I Know Who Killed Me with her, the one where she plays a stripper.”

According to the source, Lindsay didn’t bat an eye or think it was weird at all to watch her own movies.

“She’s such a narcissist and attention seeker that she didn’t think it was weird at all to watch her own movies,” the source said.

“Everyone else thought it was really embarrassing of her to do that! But whatever. It was like she was trying to re-live a time when she was actually a working actress.”