Amanda BynesAmanda Bynes said in the commentary that the makeup team spent hours putting braces on her for the short scene of Daphne's 15th birthday, in which the braces aren't even noticeable.
When Henry calls Libby to tell her Daphne has been out all day with a boy in a band (Ian), Libby says, Lemme guess, he's a drummer? In reality, Oliver JamesOliver James, who plays Ian, is a drummer.
When Henry Dashwood is looking through the photo album of Daphne's childhood, there are actual pictures of Amanda BynesAmanda Bynes when she was younger.
This film opened during war with Iraq which made Warner Bros. change the poster art for the film. Because the original artwork showed Amanda BynesAmanda Bynes displaying a peace symbol, the artwork was changed so that the peace symbol was airbrushed out. The studio did not want anyone to think the artwork was a war protest.