Continuity mistake: When Andie and Michelle are crashing at Michelle's place near the end of the movie, the cat on Andie's lap faces left, toward her head. When Michelle jumps up to answer the door in the very next shot, the cat is facing right before he jumps down. (01:42:33)
Continuity mistake: When Ben and Andie are sitting on the couch, Andie has a wedding ring set on. When they go into the bedroom she doesn't.
Continuity mistake: In the final scene on the bridge, after Andie gets out of the taxi cab her hair is wavy and frizzy. Then in the next shot when she is standing next to the taxi cab just before the kiss her hair is different, it's curlier.
Continuity mistake: In the scene where Ben is getting his shirt on in his office, in one shot he has one sleeve on. In the next shot, his shirt is totally on and buttoned to the top.
Continuity mistake: In the scene where Andie and Ben are looking at the photo album and Ben's mom calls for Andie, the phone keeps switching hands. First it's in her right hand, then her left, and back to her right by the end of the phone call.
Continuity mistake: When the ladies exit the meeting and are walking down the stairs after deciding that Andie will be writing the column on how to lose a guy, right before they meet the two executive ladies, Andie is seen starting to open up her bag to put her daytimer in. The camera angle changes to a wide shot and the daytimer is gone and the bag is closed.
Continuity mistake: When Ben goes to get Andie's coke at the Knick game, he grabs the coke from the vendor with his hand on the side of the cup. The next shot shows him grabbing the coke from the top as he turns and runs away.
