I heart ny - S4-E18
Continuity mistake: When Carrie watches the leaf falling the curb is fully lit. When she bends down to pick it up there are shadows everywhere.
Continuity mistake: In the cabin, when Big goes to sleep his brushed hair suddenly becomes completely messed up.
Continuity mistake: When Charlotte walks into the bathroom and sees Bunny talking to Trey in the bath, his bathwater is clear. When the shot goes to a close up of Trey, there is a layer of white bubbles on the water. (00:21:25)
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: When Carrie gets in Big's car a group of bystanders can't help staring at the shooting of the scene.
The real me - S4-E2
Continuity mistake: When Oscar sayas "what's your opinion, love" the photographer's camera swaps from raised to lowered.
Ghost town - S4-E5
Continuity mistake: When Sam says she'll go to the inauguration, the invitation lies between both tables but a shot later it is just on one table.
The real me - S4-E2
Continuity mistake: Before the fashion show, Oscar's cigarette swaps hands.
Continuity mistake: When Anthony appears, a piece of rectangular confetti suddenly appears out of nowhere on Charlotte's hair in a mere half a second.
Coulda, woulda, shoulda - S4-E11
Continuity mistake: Lucy Liu takes the cup to her mouth but in the angle shot from the side it disappears.
The agony and the 'ex'tasy - S4-E1
Continuity mistake: Inside Big's car, Carrie lowers her cup, but a shot later it's raised.
Continuity mistake: When Carrie confesses Charlotte that she is calling Aidan, the dancers moving and waving their arms wildly behind Charlotte disappear between shots. One might argue that it's because of the angle of the shot, but they're all moving around all the time and at least their arms should be visible.
I heart ny - S4-E18
Continuity mistake: When Miranda decides to name the baby Brady her hair swaps from dry and brushed to sweaty and messy.
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: When Carrie tells Aidan to stop hammering the wall he has dust on his T-shirt, which magically disappears in subsequent shots. After Carrie confesses, dust reappears.
Revealing mistake: When breakfast is served, Samantha mimics eating and chewing, but her fork is very obviously empty.
The agony and the 'ex'tasy - S4-E1
Continuity mistake: When Carrie holds the "Dear single" letter, the envelope is below the paper, but in the close-up it's behind the upper part of the letter.
What's sex got to do with it? - S4-E4
Continuity mistake: When Charlotte is showering, a bunch of foam on her forehead appears and disappears and reappears again randomly depending on the shot.
Continuity mistake: When Miranda talks about her date licking her butt, the food on her fork disappears between shots.
Continuity mistake: While having breakfast, Sam's fork suddenly disappears between shots.
Answer: I'm a long-time fan of the show, having re-watched it many times, and I definitely remember slightly different dialogue at the end of that episode than what's on my DVD. I'm afraid I have no idea why this change might have been made or any other info, but you're not insane.
Purple_Girl