Sporting skimpy lingerie and nightgown underneath a pink robe, Lohan, 26, was spotted walking around the set between scenes.
What was her costar doing?
While LiLo shot her scenes, Sheen, 47, caught a game of catch with an on-set production assistant before heading to the hair and makeup trailer.
Despite being killed off in Scary Movie 4, it looks like the actor will be prominently featured in the next installment, which is currently being touted as a complete reboot of the series.
As for Lohan, this will be the third movie she will star in since her hiatus in 2010.
Scary Movie 5 is slated to hit theaters Jan. 11, 2013.
What do you think of LiLo and Sheen in a comedy flick together? Will they make magic, or is it a recipe for disaster? Weigh in below.