The agony and the 'ex'tasy - S4-E1
Continuity mistake: When Carrie is showering after being stood up at her party she is not wearing mascara as she stands with her face under the water, then as she opens the curtain to talk to Charlotte again there is no mascara. She puts her hands briefly over her eyes and when she takes them away, mascara is visible all over her eyes and cheeks.
The agony and the 'ex'tasy - S4-E1
Continuity mistake: When Miranda bumps into Cheryl on the street, she holds out her arm and starts shaking it like she is shaking Cheryl's hand but when the shot changes to Cheryl, she hasn't even taken Miranda's hand yet.
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.
The agony and the 'ex'tasy - S4-E1
Continuity mistake: Charlotte holds her notepad while Trey asks her to take off her panties. Then the notebook swaps hands.
The agony and the 'ex'tasy - S4-E1
Continuity mistake: Carrie grabs the "Two souls" invitation with her right hand, but a shot later she holds it in her left hand.
The agony and the 'ex'tasy - S4-E1
Continuity mistake: During credits, when the girls are walking, Carrie holds her invitation from the lower left corner in one shot but from the middle part in another.
The agony and the 'ex'tasy - S4-E1
Continuity mistake: Big's tie is tucked inside his jacket, but loose in the rest of the shots.
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.
The real me - S4-E2
Continuity mistake: As the group are discussing Samantha's nude photos in the restaurant, a salad Miranda has ordered arrives at the table. Just after Carrie says "that we know of" you can see the waitress place both the salad and a ramekin of dressing onto the table from behind Miranda. The shot then cuts to the front and the waitress is shown putting the ramekin down for the second time.
The real me - S4-E2
Continuity mistake: When Oscar tells Carrie that her hair is all wrong, he moves his left arm up and down and signals her, but from the front angle his arm is lowered and doesn't move an inch.
The real me - S4-E2
Continuity mistake: When Oscar tells Carrie about looking like a whale, his assistant is either by his side or behind him. This changes back and forth.
The real me - S4-E2
Continuity mistake: When Oscar shakes the underwear at Carrie, the position of his thumb holding the clothes hanger changes between shots.
The real me - S4-E2
Continuity mistake: When Carrie talks about Cindy's beauty Mark, the photographer is drinking wine, but the glass disappears in the angle shot from behind.
The real me - S4-E2
Continuity mistake: When Sam shows her picture to the store clerk, two huge lighting screens are reflected on the glossy paper.
The real me - S4-E2
Continuity mistake: When Sam arrives at the framing store, the position of the handles of her bag changes between shots.
The real me - S4-E2
Continuity mistake: When Sam talks to the framing store clerk, his hand is first on the notepad, but then jumps to being on the table.
The real me - S4-E2
Continuity mistake: When Oscar sayas "what's your opinion, love" the photographer's camera swaps from raised to lowered.
The real me - S4-E2
Continuity mistake: Miranda puts the magnifier loupe on top of the sheet, but a second later it's on the table.
The real me - S4-E2
Continuity mistake: At Oscar's studio, the photographer's left arm is raised and grabbing the strap, or lowered depending on the shot.
The real me - S4-E2
Continuity mistake: When Miranda shakes Dave's hand, her towel is below her collarbone in the front shots or above, in the angle shot from behind.
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