Secret sex - S1-E6
Continuity mistake: Samantha and Carrie are hanging Carrie's poster in her apartment. In one shot, the whole poster is pinned to the wall and in the next shot, the bottom left part of the poster is curling up. After another shot of Samantha, the poster is pinned perfectly to the wall again.
Secret sex - S1-E6
Continuity mistake: Carrie and her friends are in the City, waiting for the bus with her photo on it to drive by. When it does, there is a shocking hand-drawn image of a sexual nature near her head on the poster. In the next shot of this image, which is more of a close-up; it's a different drawing. Very similar, but obviously not the same drawing as shown the first time. (00:19:00)
Secret sex - S1-E6
Continuity mistake: When Big hugs Carrie her left hand is right next to her collarbone. A shot later her hand is around his body.
Secret sex - S1-E6
Continuity mistake: When Carries is at Big's place and she pours herself vodka or something, note the label and you'll notice that the bottle turns around between shots.
Secret sex - S1-E6
Continuity mistake: When Carries goes to Big's place to say goodbye she rises both arms. A shot later the right one is lowered. This changes back and forth.
Secret sex - S1-E6
Continuity mistake: While Waiting for the bus, Sam fills Charlotte's glass, which starts bubbling. A shot later from a different angle the liquid level is a bit less and the bubbles are gone.
Secret sex - S1-E6
Continuity mistake: While on the doctor's bed, Miranda's hand is bent and resting on the pillow but a shot later it rests against her head. (00:15:58)
Secret sex - S1-E6
Continuity mistake: When Big meets some skiing friends on the street, the way Carrie's scarf is folded changes in very shot.
Secret sex - S1-E6
Continuity mistake: When Samantha is holding the poster against the wall she puts her left hand on the paper. In the following shot most of the hand lies on the wall.
Answer: Yes, it is.