Revealing mistake: When Jessica and Helen are arguing outside the dress shop, there are 2 girls crossing the street in the background who blatantly stop to watch the scene.
Continuity mistake: When Jessica is telling the pregnant lady about her new love.. she is crouched down on the couch grabs the lady's arms and then in a flash she is standing and turned the other direction.
Other mistake: Near the end of the movie, there is a party scene in which Jessica and her ex-boyfriend are talking on the roof of the building. Behind them is a sign posted by the door to the roof. The letters are reversed, as if you're reading the sign through a mirror.
Continuity mistake: When Helen is opening a Christmas gift, Jessica throws a white ribbon around her neck. In the next shot, it's gone.
Continuity mistake: When Jessica is in the coffee room talking to her pregnant co-worker, the co-workers coffee mug keeps changing positions in her hands in every shot.