Roman HolidayGoofs

When Ann is sitting on the banister in front of the clock tower, her cone has a large scoop of gelato, but when Joe arrives a moment later and sits beside her, the gelato is almost gone.

After Joe throws his drink on Irving, a visible wet mark appears on Irving's shirt. In the next shot, the wetness appears to have disappeared (this occurs twice during the scene).

Ann wears a white tie until she sits down on the Spanish steps. The tie is gone and the collar is open when Joe speaks to her on the next shot. When they are stopped at the Palazzo Venezia, Ann is wearing a striped neckerchief and continues to do so for the rest of the evening.

When we first see Joe and Irving, they are playing five-card draw poker. There are eight men at the table playing, but it is not possible to play five-card draw poker with eight players. After the initial deal, there would only be twelve cards remaining for the draw, not enough for everyone to draw up to the three cards allowable in such a game. They could only play five-card stud. Interestingly, when Joe leaves the table, the dealer calls for seven-card stud, which is the only game playable with the seven remaining players.

It is a known fact that when riding a scooter or bike, one leans to the inside of the curve of the road, and not the opposite as it appears in the scene of the couple in the scooter shots, especially on the photos selling around the Rome tourist shops. It is then clearly obvious they're riding at the back of some 4-wheeled vehicle.

When Joe Bradley follows Ann through the streets, people can be seen watching the filming rather than acting natural.

The photo Irving takes during the fight at the dance, of Ann smashing the secret service agent over the head with the guitar, is not the one taken at the moment indicated in the film and shown later as the photograph. Supposedly, when Ann first hits the agent, Irving has missed it and calls out for "Smitty" (Ann) to hit him again - and Ann obliges, striking the agent on the head a second time as Irving shoots the picture. But a look at the subsequent photo clearly shows that it was in fact taken at the moment of the first blow, not the second. In the action, when Ann hits the agent the second time, the guitar appears already broken, and the agent is turned almost 180 degrees away from Ann's face and is already sinking down from the first blow, his face barely visible. But the photo - supposedly the only one Irving got - clearly is of the first, not second, blow. There, in both the live action and the photo, the agent is facing to his left and has not sunk so far down, his face is mostly visible, and the guitar is not as damaged as in the second blow. That the photo was actually taken of the first blow is further indicated by a close viewing of the live action of Ann hitting the agent the first time. At the moment of impact the film has a brief jump-cut, indicating that a frame has been deleted from the film, and in addition the tail-end of a flash from a camera's flashbulb can be seen very briefly immediately after the cut frame. The missing film frame coincides exactly with the instant Ann hits the agent with the guitar, and is the identical shot that was used as Irving's "photograph", which he later presents to Ann in the packet of pictures he'd taken. But it's a photo of the supposedly un-photographed first blow with the guitar, not of the second blow, the only photo Irving was actually seen taking.

After Joe rolls Ann out of his bed onto the couch, Ann mumbles, "So happy." However, her mouth doesn't move.

When Ann and Joe are on the scooter, her words don't match her mouth.

When Princess Ann is sneaking out, as she's leaving the room full of mirrors, someone's head becomes visible in the lower left of the screen.