You’ve either got sharp eyes or already knew the answer to this. The props used in the scene where Belinda and Landon’s other “friends” circulated a flier with Jamie’s face pasted on someone else’s body with the caption “Virgin Mary?” were indeed nudes. In post-production, a bikini was digitally drawn onto the one flier that we saw clearly to allow the movie to get a PG rating. If you watch closely, you can sort of see this on some of the other fliers, most notably the one that Eric (the black guy) has in his hand when he is laughing. [This is explained in the DVD audio commentary]