Corrected entry: At the beginning of the film, when Matt gives Jenna her dollhouse, she opens the closet door. You can see a height chart on the inside of the door and it says "12 years old 1986" so that meant that the year was 1987, but Jenna had been dancing to Michael Jackson's 'Thriller', which wasn't released until 1996.
Corrected entry: When Matt walks into Jenna's office and Lucy is there, he says "Jenna", even though Lucy's blonde hair is visible from his point of view and she doesn't appear to be Jenna.
Corrected entry: When Jenna goes to find Matt at his parent's house (for his wedding), she takes a plant to shield her face from parent's eyes. She goes up the stairs. Yet when she is seen in the next shot walking up the stairs, the plant is gone.
Corrected entry: Wouldn't Matt be the least bit suspicious that Lucy, of all people, is in Jenna's office, looking through her stuff? I mean, Matt's not the brightest guy, but he should be suspicious.
Corrected entry: In the beginning of the scene when Jenna gets into the cab near the end of the movie to go home, she has a shirt or jacket with her and yet when she gets out of the cab to run home, she no longer has it.
Corrected entry: At the end of the film Jenna asks Matt if he signed the release form for the photos they took for her redesign. He replies that he has not trusted Lucy since they were kids, implying that he didn't sign it. There is no explanation as to why the pictures are on the buses etc.
Corrected entry: When Jenna is in her apartment as 30 for the first time, the boyfriend comes out of the bathroom wearing a towel. She doesn't see him enter the kitchen still wearing the towel. When Jenna puts her head down below her knees, the boyfriend comes out of the the kitchen, wearing only a "jock strap". When he comes out of the bathroom looking for conditioner, he is again wearing a towel, but apparently nothing beneath it (the infamous "thingy" scene).
Corrected entry: When Jenna first turns 30, she starts looking through mail on the coffee table in her living room. All of the letters are addressed to "Jenna Rink. 61 5th Ave", but in the scene where Matt first leaves Jenna's apartment and he looks back at the closed door, it says 71, instead of 61.
Corrected entry: When 30-year-old Jenna is getting ready to go to her first adult party on Wall Street, she's putting on her makeup rather heavily - what a 13-year-old would probably do. Bright pink lipstick, heavy blue eyeshadow, fake eyelashes, etc. Then she gets up and goes into her big walk-in closet. As she's looking through all her shoes and dresses, her makeup is much more subtle, most notably her eye shadow. It's not as blue and heavy.
Corrected entry: When Jenna goes to Matt's apartment to meet him for their planned "celebration dinner," Matt's fiance, Wendy, opens the door and appears surprised to see her. Every other time Jenna went to Matt's place, he had to buzz her in even though she always lied about who she was. Wouldn't Wendy have had to buzz Jenna in also?
Corrected entry: If you look closely in the beginning of the movie, there are seven "Six Chicks."
Corrected entry: If Matt says Jenna threw the dream house at him on her 13th birthday, shouldn't it be cracked or broken when he gives back to her on his wedding day?
Corrected entry: When Jenna and her friend are talking about her friend having a nose job, her friend mentions that Jenna's nose job was better. At the end of the film when the future has changed, her nose looks the same as it did throughout the rest of the movie. If she had had a nose job in the original future (when she cared more about her popularity), her nose ought to look different at the end of the film.
Corrected entry: When Jenna first leaves the apartment after finding out she's 30, she grabs a sort of sparkly, silvery bag. Then at the first Poise meeting, Jenna is sitting down and her bag is sort of tan - obviously a different bag. She wouldn't have had time to run to her office for a different bag, because Richard takes Jenna and Lucy to the meeting immediately after they arrive. The bags continue to switch on and off throughout the first part of the movie, up until Matt leaves Jenna's apartment before the party.
Corrected entry: In the scene in the office when Sparkle "scooped" Poise again, Richard tears off the cover of the current month's Sparkle and slaps it on the wall crookedly, shoving a pin in. In the next shot, the magazine cover is perfectly straight and parallel to the cover of Poise next to it.
Corrected entry: In the beginning of the movie when they are taking school pics, Jenna has some sort of braces on her teeth. Later, when she is talking to the six-chicks, they are gone.
Corrected entry: At the start of the movie, pictures are being taken. When the camera pans out for a wide view there is a sign that says "(some teachers) homeroom" the only problem is, the photographer is not taking class pictures, they are taking single portraits.
Corrected entry: When 30 year old Jenna is hesitating to get into the car for the first time with her best friend, the "Don't Walk" sign changes to "Walk" then back to a non-flashing "Don't Walk" within a matter of 4 seconds, which is way too fast. (00:17:15)
Corrected entry: In the scene where Jenna wakes up and she is 30, watch when she flicks through her mail. You can see a Letter from Sparkle Magazine. This is significant later in the film when Jenna finds out she was the one giving ideas to Sparkle.