1. Audrey Hepburn and Gregory Peck

Complex Says: When most people hear the word “Vespa,” images from the 1953 film Roman Holiday instantly spring to mind--such as this one. Audrey Hepburn remains an icon of both film and fashion to this day, and Roman Holiday was her breakout role.

Originally, the film's opening credits were meant to list Gregory Peck as its only star. Audrey Hepburn was to be credited as “and introducing Audrey Hepburn.” However, Peck saw Hepburn's impending star potential and said, “You've got to change that because she'll be a big star and I'll look like a big jerk.” Smart man.