Deliberate mistake: In the prom scene at the end, there is a shot of a couple dancing with his hand on her rear-end. A counselor comes over and hits the boy's hand to make him move it. He complies, they kiss, and he puts his hand back when the counselor leaves. The camera cuts away to a different shot, and then returns to an over-head wide shot of the crowd. Down in the lower left-hand corner you can see the exact scene with the couple and counselor being filmed.
Pretty in Pink (1986)
1 deliberate mistake
Directed by: Howard Deutch
Starring: Harry Dean Stanton, Andrew McCarthy, Molly Ringwald, Annie Potts, Jon Cryer
Continuity mistake: In outdoor scenes outside of the record shop (mall area), extras are seen on different days in the same outfits.
Trivia: Both Michael J. Fox and Anthony Michael Hall turned down the role of Duckie.