Continuity mistake: Towards the end of the movie at the prom, Terry finally shows Rick that she's really a female. She exposes her breasts. Now obviously she's not wearing a bra. But in the next scene you can see she's wearing a lace one.
Continuity mistake: Terry knocks on the door at her house and her brother answers. You can see he's eating pizza and drinking a can of Coke. They go upstairs and the Coke has changed to a can of beer.