The morning when Jam's mom comes into his room after rescuing him from a night of debauchery and band practice, she makes him wear the clothes she bought him. When she finds the k-mart box on the top of the shelf, and pulls is out, she is holding a box with a big red k on it with the "mart" spelled in white across it. Then, when she turns around and tells Jam to put the clothes on before they go out of style, the k-mart logo is a new school one with a smaller red k, and blue "mart" beside it.

Perhaps I've seen this movie a few times.