Continuity mistake: All the action occurs near Claremore, Oklahoma. The picturesque mountains in the background of several scenes are lovely, but there are no mountains even close to that size within hundreds of miles of Claremore.
Continuity mistake: When Cary Grant and the insurance agent are walking through the flower market, the girl in the bright pink dress walks past them twice.
Continuity mistake: Lady is put in her bed and the master leaves the kitchen but he goes back in and puts a newspaper on the floor and leaves again but Lady gets out of her bed so the master comes back once more and puts her back in her bed but the newspaper on the floor has vanished.
Continuity mistake: When they are on the back porch, watch the Coke bottle. The level of the liquid in the bottle goes down, then up, then down, etc.
Continuity mistake: Adelaide performs her first number and finds Nathan in her dressing room. There is a pink robe draped over the partition. Placement of this robe changes during the scene without being touched. (00:49:45 - 00:50:30)
Continuity mistake: At the Stardust Ballroom, listen to the first song the dance band is playing on the soundtrack. It skips measures and at one point is hastily spliced to begin again so as to continue because more time is needed in the scene. The MGM DVD copy is incomplete because it is missing the scene in which Clara speaks with her parents after her evening with Marty. The scene is present on the CBS/Fox VHS.
Continuity mistake: In the Police Station at the beginning of the film James Dean takes off his flecked jacket to reveal his spectacle case in his top pocket. As his character does not wear glasses the offending case is removed in the next scene.
Continuity mistake: When Jervis returns Julie to her suite after a night of dancing, he picks up a morning paper, reads some excerpts from it, then says goodnight to her. As she opens the door, all he has in his hands is his boater, no newspaper, and in the following long shot, no paper is visible anywhere.