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My Best Friend's Wedding (1997) Poster

Goofs

Incorrectly regarded as goofs 

Charlie Trotter plays himself in the movie. He is a Chicago chef and, at the time of the movie, had no restaurants other than his signature restaurant in Chicago. Jules reviews his New York restaurant; presumably, he was either hired away by a new fictional restaurant in New York or has opened a fictional branch of his Chicago restaurant there.
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Character error 

During Title sequence, the lead Bridesmaid that is 'singing' messes up her words (toward the end of the song). You can see her quickly correct herself.
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Dionne Warwick is Whitney Houston's cousin, not her "aunt" as Mandy claimed.
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Kimmy is stated to be 20, yet orders an Amstel Light in the karaoke scene, even though this is forbidden by law to people younger than 21.
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Kimmy is supposedly an architecture major at the University of Chicago, but it has no architecture program.
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Julianne says that she had a minor in Psychology at Brown University; Brown does not have minors.
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Continuity 

Disappearing picture when Julianne is composing the email.
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After Julianne set up Kimmy to discuss with Michael at dinner the proposition of working for her father, Michael becomes upset and Kimmy burst into tears running down her cheeks, move to their kiss where her face is completely dry, then she pulls away from the kiss and she has tears again.
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Ash disappears and reappears in Julianne's hair when she is lying down.
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Julianne's hair in the gazebo.
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In one of the chase scenes there's supposedly two people in the BMW, but when they show a closeup of the car there's obviously only one person.
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When Jules is smoking outside the Hotel room and the door is pulled open ash falls in her hair, after a few shots of this scene the ash disappears, but she is still in the same position.
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When Jules enters the private box at the ballpark, she is carrying a full tray of beers. She then hands a couple to some guys. A few seconds later the tray is full again.
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When Kimmy and Julianne are having tea together, Kimmy's necklace is tucked into/over her top.
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When Michael is sitting on the bench at the train station after looking for Kimmy, two men in uniform walk behind him. As Julianne finds him and is walking towards him, the same two men walk behind him again. And the newspaper in the guard's hand changes from left to right.
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At the start of the movie in the restaurant the wine glasses have very little in them. Throughout the scene they have the same (realistic) amount until George takes a sip from his, when it suddenly has a lot more.
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When George comes over to see Julianne, her cigarette disappears.
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Jules's cigarette length changes as she is smoking outside her hotel room on the floor.
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Jules is sitting on the floor and leaning her back against the door with a cigarette in her left hand. When Michael suddenly opens the door she falls backward and, in the next shot of her flat on the floor, the cigarette is in her right hand.
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In the men's suit shop, Michael's left suit sleeve appears and disappears.
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While driving away after Kimmy catches Jules and Michael kissing, Kimmy enters her convertible and the top is down. When they pan back as she drives away the top on her convertible is suddenly up.
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In the restaurant scene, a waiter sits down to a piano to accompany the singing. While the piano is still playing, he is seen in the background waving his lobster arms.
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Errors in geography 

After Michael and Kim pick up Julianne from O'Hare Airport, they're heading north on Chicago's Lake Shore Drive. Kimmy swerves wildly to her exit. The next time you see the car, it's heading south on Lake Shore Drive with the Drake Hotel in the distance.
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The boat ride magically teleports the characters to many different points along the Chicago River, from Lake Shore Drive to being alongside Union Station (trains in background) to Clark Street Bridge (Merchandise Mart in background).
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In Chicago, Lake Shore Drive is bordered by Lake Michigan on the east and the city on its west side. However, in more than one scene when driving on Lake Share Drive, the lake is either on the wrong side of the vehicle, or it keeps changing sides of the vehicle.
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When George drives Julianne to the airport to fly from New York to Chicago, road signs are seen for U.S. 45, Mannheim Rd., which is in Chicago.
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Incorrectly regarded as goofs 

Julianne has two pairs of sunglasses throughout the whole time she's at Kimmy's parents' estate, often wearing one pair while the other is hanging on her top shirt button. When she and Michael reach the gazebo and she takes off the sunglasses she's been wearing, one can see that she's holding two pairs.
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Spoilers 

The goof item below may give away important plot points.

Character error 

When Julianne is chasing Michael in the bread truck, she is talking on the phone and tells George that she is driving down Michigan Avenue. She is actually on Dearborn.
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See also

Trivia | Crazy Credits | Quotes | Alternate Versions | Connections | Soundtracks

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