Continuity mistake: In her Grandma's attic, Sam opens a trunk. In the wideshot there is a little box opened, with nothing on the lid. It cuts to a wideshot and there are photos laying on the lid. Then moments later, Sam goes to pick up a large red scrap book. It cuts to a closeup, and she's now holding some newspaper sheets. (01:13:55)
Continuity mistake: When Teeny, Samantha, and Chrissy save Roberta from the water and they pull her onto the sand, Chrissy punches Roberta. When it shows Roberta moaning, you can clearly see that Roberta has a white towel wrapped around her waist. Then you can see that Chrissy has one too. But when they show a view of them far away they don't have towels.
Continuity mistake: Near the beginning, when Demi Moore and Melanie Griffith are coming into the house of Rita Wilson, Demi Moore and Melanie Griffith are standing on one side of the room and Rita Wilson is standing with Rosie O'Donnell on the other side of the room. If the camera shows Rita Wilson and Rosie O'Donnell from behind, Rosie O'Donnell is standing a little bit behind Rita Wilson, but if the camera shows Rosie O'Donnell and Rita Wilson from the side they are standing in a line.
Continuity mistake: When the girls see crazy Pete for the first time he cycles past the camera. then the camera flashes to the girls and then you see the exact same footage of Crazy Pete going by on his bike.
Continuity mistake: When the girls are at the diner, talking about how the waitress Wiladene is "off", Teeny has one hand on her Cosmo and one holding the pencil marking the answers, but in the next shot when Teeny says "What do you expect? She's a witch" her hand is just touching the edge of the table.
Continuity mistake: When the girls are riding their bikes to the library, Chrissy's hair is up in pig-tails with pink bows. In the next scene when the go under the train bridge, her hair is down without any bows. Then when they come under the bridge, Chrissy's hair is pulled back into the two pig-tails with bows. (00:28:25)