Continuity mistake: When Miranda takes a sip of her latte in the restaurant scene with Steve, only half of her upper lip has foam on it. In the next shot of her it is covering the whole of her upper lip. The same happens to the foam on Steve's lip when he mimics her. (00:24:50)
Continuity mistake: When Carrie is feeling depressed in Mexico and is being fed food in bed by Samantha, there is a tea pot on the tray on the bed. The scene changes back and forth between Samantha and Carrie and each time it changes, the style of the tea pot completely changes. When it's a shot of Samantha, it's a regular tea pot with a lid, and when it's a shot of Carrie, it changes to an art deco style pot with no lid whatsoever.
Continuity mistake: In the scene where Carrie and Big are in bed (Carrie is reading the Love Letters) the library card Carrie uses as a bookmark keeps changing position. She opens the book and holds the card behind the book cover, then when you see a close-up of the text you can see the card is being held inside the book. Then it's back behind the book cover. (00:22:25)
Continuity mistake: When the girls are at the restaurant in Mexico and the waiter brings over the drinks, he first hands Charlotte the bottled water and then hands Samantha the drink. The camera pans back to the waiter holding the drinks and the bottle of water is still there along with 2 other drinks.
Continuity mistake: When Samantha is lying on the table covered in sushi and the phone rings, she moves and the piece of sushi on her shoulder falls down. There is a visible piece of double sided stick tape there to hold the sushi in place. In the scene time elapses, but it is understood Samantha never leaves the table and remains covered in sushi. When the shot returns to her close up, the piece of tape has been removed from her shoulder.
Continuity mistake: When Charlotte, Anthony and Carrie are planning the wedding, Carrie has a pen attached to her dress strap which keeps changing positions (it doesn't disappear, we can still see its black cap) while she is sitting on the bed and when she gets her wedding dress out of the closet. (00:16:00)
Continuity mistake: In the extended scenes of the movie when the four girls are trying on Carrie's clothes from the eighties, they are sitting on the bed together watching Lily coming out of the bathroom draped in numerous handbags. They have all changed back into their normal clothes, but when Lily continues to walk closer to the girls, the angle changes and the four girls are back in Carrie's outfits again, dancing around in the bedroom.
Continuity mistake: When Louise calls Carrie from the bridal salon, her little sister is visible in the mirror's reflection as she holds Louise's Louis Vuitton bag on her lap. In the reflection the back of the Louis Vuitton bag faces out, but in the sister's close-up the bag's distinctive front faces out, then in the next shot it's the back again. (02:09:30)
Continuity mistake: Whene Louise leaves to get married she puts the brown envelopes in the left drawer/cupboard, furthest from the TV. When she goes to look for them in a later scene they are in the left drawer/cupboard, nearest the TV.
Continuity mistake: In the scene where the four ladies are sitting around the pool in Mexico, talking about Miranda's lack of waxing, keep an eye on the magazine that Charlotte is holding. Just as Miranda walks away, the open page on the left side of the magazine is a red page advertising what looks like a perfume. As she leans forward to say, "really," the page changes immediately to a white page. Then after Carrie makes her "Mexicoma" joke, the shot goes back to Charlotte and Samantha, and the magazine Charlotte has open is now on a blueish picture. Not enough time to change the pages. (01:05:00)