Continuity mistake: When Carrie and Miranda go the buy the wedding dress, the clerk's hands are either on top of a book or next to its edge, depending on the shot.
Continuity mistake: After the sonogram, while Carrie and Miranda walk, bystanders stare at the filming, check the old lady with a pink T-shirt on the right, bending her neck, and the woman with a cell phone on the left.
Continuity mistake: In the shower, Aidan's slick hair swaps to messed up in a split second. Water couldn't have done it and neither could he, for his hands were busy soaping his body.
Continuity mistake: Magda holds the sonogram from the lower left corner, but a shot later she is holding the upper left one.
Continuity mistake: At the ball, Richard takes a sip with his right hand, but from a different angle it's his left.
Continuity mistake: During brunch, when Miranda asks "an unpleasant question" a fork suddenly appears in her hand.
Continuity mistake: The clerk at the wedding dress store closes the book next to her, but a shot later it's open.
Continuity mistake: When Miranda feels a kick the towel on the sink changes positions between shots.
Continuity mistake: Aidan gets in the shower and raises his left arm. A shot later it's lowered.
Continuity mistake: When Carrie visits Charlotte she says "and for the record" and raises her right hand towards her forehead. From the opposite angle it's lowered.
Continuity mistake: When the jewelry clerk advises Charlotte what to do with her ring she extends two fingers, but a shot later she is extending all five.
Continuity mistake: Carrie says that Aidan made her keep the ring and Miranda is holding her glass. A shot later her hands are away from it. This swaps back and forth.
Continuity mistake: During breakfast Miranda holds the legal letter with both hands, but in the wide angle she holds it with only one hand.
Continuity mistake: Miranda folds and puts down the legal papers, but a shot later she is still holding them in her hands.
Continuity mistake: When the girls exit the restaurant the passers-by behind are not continuous between shots.
Continuity mistake: When the girls finish breakfast, Miranda puts the papers in the envelope twice.
Continuity mistake: Right before the '3-way'; Samantha takes off the top of her lingerie/dress and pushes it down to her waist, to reveal a strapless black bra she is wearing underneath. She does this in response to the younger girl removing her top, and they are both obviously getting ready for the main event. But in the next shot when Samantha is kissing Richard in bed, she is suddenly wearing the black lingerie/dress pulled back up over her shoulders again. Why would she put the dress back on, after removing it for sex? (00:23:10)
Continuity mistake: When Carrie and the Vogue editor are drinking martinis in his office, the level of liquor in their glasses changes from shot to shot.
Continuity mistake: When Charlotte is crying into the pillow, we can see that she's gotten black eye make-up on it. The splodges of make-up disappear twice during the scene, most noticeable just when Carrie walks in holding the baby.
Continuity mistake: When Miranda holds the rattler the way its ribbon falls changes between shots: First it all falls on the left side, then it's split in two halves.