Step 1 : Introduction to the question "In which 1983 film did Tom Cruise help turn Ray-Ban Wayfarer sunglasses into a fashion phenomenon?"
...Tom Cruise's unforgettable performance in Risky Business, particularly the iconic scene where he dances in a dress shirt, briefs, and Ray-Ban Wayfarer sunglasses, sparked a huge resurgence in the brand's popularity. Wayfarer sales had been declining before the film but soared afterward, making the sunglasses a fashion must-have. The film is considered one of the most successful examples of product placement in movie history. Two years later, Cruise sparked another sunglasses craze when he wore Ray-Ban Aviators in Top Gun.