Other mistake: Wendy loses her accent and it changes at points, such as when she asks Matt if he's hungry.
13 Going On 30 (2004)
1 other mistake - chronological order
Directed by: Gary Winick
Starring: Mark Ruffalo, Jennifer Garner, Judy Greer, Andy Serkis
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.
Becky: I like your dress.
Jenna: That's because I have these incredible boobs to fill it out.
Trivia: When Jenna wakes up as 30, she is in the same apartment the 30-year-old woman in the magazine was in when she was 13.
Answer: It is La Cumparsita.