13 Going On 30 (2004)

Continuity mistake: Towards the end of the film, Mattie hands Jenna the dream house he made for her 13th birthday. There is hardly any "wishing dust" on the roof. However, when she goes outside and sits on her front porch, there is plenty of wishing dust all over the roof of the toy house now.

Continuity mistake: When Jenna and her best friend are outside the office in the beginning of the film, the amount of hair tucked behind her friend's ear varies from shot to shot.

Boobra

Continuity mistake: Outside on the sidewalk, Lucy is giving Jenna a lecture on going into the office for the first time. The same woman in a purple dress walks by 3 times (behind Jenna.)

Continuity mistake: When Jenna first realizes that she is thirty and she walks down the hallway, there is a pile of magazines on the counter with the mirror. Then in the next shot, the pile of magazines isn't there.

Continuity mistake: In the scene where Jenna meets Matt's fiancee Wendy and then introduces them to her boyfriend Alex. As Matt and Wendy are leaving, Alex says "Nice to see you folks" and a second later as Matt and Wendy pass in front of him, he says "Nice to see you folks" again.

Continuity mistake: When Jenna first sees her boyfriend she has the umbrella in her hand. She unhooks the strap on the umbrella, then the shot changes and the umbrella is hooked again, then back to unhooked.

Boobra

Continuity mistake: At the first Poise meeting in the movie, Jenna is given a scone or biscuit at first it is raisinless. In the next shot it is full of raisins.

Continuity mistake: Just as Jenna is calling for a cab that happens to be driven by her old man, Chris Grady, she runs in the street and stops. The scene cuts to the cab slamming on its brakes, and then cuts back to her, but with the same cars sitting in the same spots as before she whistled about 2-3 seconds before.

dizzle

Continuity mistake: When Jenna goes to talk to Matt before he gets married, Matt's tie changes its position around his neck. It changes in the shots going to and from Matt and Jenna.

Continuity mistake: When Jenna and Matt are talking in the park about her hiring him to be the Poise photographer, her hair on the left side of her head changes from being in front of her shoulder to behind her shoulder several times.

Continuity mistake: At first when Lucy and Jenna are at the work party talking to the editor and chief of Sparkle, Jenna's Pina Colada glass is full. However, in the next shot the glass is half full and then the glass goes back to full again.

Continuity mistake: When Jenna asks the DJ in the party of Poise to play "Thriller" he starts dancing. Then, there's a closeup to Jenna and we can see that the DJ is not dancing anymore. In the next shot, he's there, dancing again.

Continuity mistake: When Jenna is having her picture taken at the school when she is telling the photographer her name is Jenna her hair is in front of her ears but when you see the picture her hair is behind her.

Continuity mistake: When Jenna gets out of the car to go to her job for the first time, her hair/makeup is a little frazzled. As she and her friend talk outside the building, her hair becomes neater and skin a little darker from one shot to the next.

Continuity mistake: When they are at the party for Poise, Matt is dancing along with the group. If you look closely at his legs when there's a close-up of Richard, he's already stopped dancing. The next shot, he stops dancing and tells Jenna that he has to go.