Molly Ringwald's only nude scene. She admitted in an interview that she accepted the role and agreed to go topless for the same reason many former child and teen actresses do: to break into more mature roles.
So you wanna fuck?
Melissa: I can demonstrate, if you like.
Doug: I already told you, I have a girlfried.
Melissa: I don't know. Your mouth says that...
Melissa: ... but your body is saying something different.
When Melissa is falling out of the window on the car she still has her white sneakers on. In the next shot she is barefoot.