Continuity mistake: After Pip knocks the apple martini off the table, there is a close-up of him standing on Giselle's plate and the knife is beside the plate with the fork beside the knife. When Robert calls for help, in Pip's next close-up the utensils are placed the opposite way, with the fork beside the plate. (01:00:15)
Other mistake: In his search of Giselle, when Edward knocks on doors 209 (hissing cat), 405 (barking dog), and 714 (purple guy), the funny thing is that in all three close-ups the three door jambs/trim have the same paint glob markings. The actual doors were changed, but the jamb/trim remained the same for all three shots. (Only visible on widescreen DVD). (01:04:05)
Visible crew/equipment: At Robert's apartment, when he and Morgan stand by the window just as Edward takes Giselle's hands and later kneels, the actors' two T-marks are visible. The pink marker was for Giselle in the previous shots, and Robert and Morgan stand behind the orange marker. (Only visible on fullscreen DVD.) (01:09:35)
Continuity mistake: As Robert drops from the bent spike, he hits the roof and both he and Giselle are sliding down the side of it. In the shot viewing from above Robert can be seen reaching some kind of ledge on the roof, while Giselle is 1-2 meters above him, also sliding towards the ledge. In the next two shoots (1st from the side, 2nd from below of them) both of them are still sliding down the roof with the ledge no where to be seen. (01:31:15)
Continuity mistake: When Giselle tosses the sword and the tip catches Robert's sleeve below the cuff, in the following shots the position of its point through the sleeve keeps differing. Then, after Robert loses his grip and Giselle breaks his fall, as they both start to slide Robert's sleeve is intact, but in the next shot the entire sleeve suddenly disappears. (01:34:25)
Continuity mistake: When Giselle, Robert and Morgan are at Bella Notte's, on their table the pizza pan sits atop a chrome stand. In some shots the stand has a chrome cross bar, between its side legs at the base, and in other shots that cross bar is gone. (When setting up for the shots within this scene, the props guys simply turned the stand upside-down sometimes, which resulted in the cross bar either being on the table, or directly under the pizza pan thereby disappearing.)
Continuity mistake: When Robert gets up in the morning to deal with the pest problem he has facial stubble, but when he gets outside after chasing Nancy in his pyjamas, he is nearly clean shaven. When he goes back to the apartment his heavy stubble is back again.
Factual error: At the Kings and Queens Ball, the bandleader announces that the next dance will be a waltz, which are, by definition, played in 3/4 time. However the tune that is played is clearly in 4/4 time and thus is not a waltz.
Continuity mistake: The first time we see Robert with the arguing couple, the woman puts her finger to the side of her head in a side-on shot of her, and in the next (a more front-on shot) her hand is suddenly on the table.
Other mistake: In the song, Happy Working Song, that Giselle sings while cleaning the apartment, she references cleaning the hair clog from the "shower" drain. But in the bathroom scene shortly after, she doesn't know what a "shower" is, so she should not have used that exact term earlier.
Continuity mistake: In the scene where they are in the pizza shop, Robert's part in his hair changes back and forth noticeably between shots.
Continuity mistake: At Bella Notte's, there is a pizza pie on table, whose characteristics such as sauce, crust, dough bubbles, three basil leaves, etc., change from the start of this scene to when it is hurled like a frisbee.
Continuity mistake: During Giselle's first night in New York, from the time she crawls out of a sewer, the bottom of her white gown (and white stockings) becomes somewhat dirty, but by the time she falls asleep on the couch in the apartment, the gown is cleaner.
Continuity mistake: When Giselle stands on the livingroom coffee table as she sings, the hutch stands about a foot away from the fireplace mantle behind her. When she tosses the flowers into the vase, which sits upon the fireplace mantle, the hutch is so close that it nearly touches the mantle.
Visible crew/equipment: When the witch gives Giselle the apple you can see a crew member reflected on the apple.
Continuity mistake: When Robert and Giselle are at Bella Notte's, there is a red checkered tablecloth on the table. The direction of the broad red lines changes between shots, in Chip's close-up when he stands on Gabrielle's plate. First it's horizontal, then vertical - note the knife and fork.
Continuity mistake: At Bella Notte's, after Robert entertains Giselle with the magic trick, the salt shaker is on the table between them and the pepper shaker is at the opposite end of the table, beside Morgan's plate. When Nathaniel brings the apple martini both shakers are beside Morgan's plate, though nobody touched the salt.
Continuity mistake: Look at Giselle's right arm when she falls on Robert after stepping out of the shower. In the initial shot, that arm is on the floor. In the next, she's using that arm to hold her towel in place.
Revealing mistake: In the hotel room, Nathaniel picks up the squirrel by the tail. In the very first shot he goes to grab it and grabs thin air below the prince's knee. In the quick angle change he has the squirrel in his hand. It looks like either the actor or the computer animator didn't quite sync things up.
Continuity mistake: When Giselle is cleaning her apartment up, flies come down her fireplace in an open flue. Exterior shots of the apartment show no chimney.
Chosen answer: Originally she was scripted to have a few scenes with Nancy, Robert's girlfriend, in the design studio. The Producers deleted some of those scenes. You can see that in the DVD under Deleted scenes, where she has a slightly bigger part and actually has a small conversation with Nancy about Robert's text message apology.