Yes, but jeans did not become fashionable until associated with Counterculture:
https://en.wikipedia.org/wiki/Jeans#20th_century_evolutionAfter James Dean popularized them in the movie Rebel Without a Cause, wearing jeans became a symbol of youth rebellion during the 1950s.[23][24] During the 1960s the wearing of jeans became more acceptable, and by the 1970s it had become general fashion in the United States for casual wear.[25] In Japan in 1977, a professor of Osaka University Philip Karl Pehda chastised a female student wearing jeans in the classroom. Then he was protested by the students, and a controversy arose in the country.[26][27]
https://en.wikipedia.org/wiki/James_Dean#Legacy_and_iconic_statusNumerous commentators have asserted that Dean had a singular influence on the development of rock and roll music. According to David R. Shumway, a researcher in American culture and cultural theory at Carnegie Mellon University, Dean was the first iconic figure of youthful rebellion and "a harbinger of youth-identity politics". The persona Dean projected in his movies, especially Rebel Without a Cause, influenced Elvis Presley[108] and many other musicians who followed,[109] including the American rockers Eddie Cochran and Gene Vincent.
In their book, Live Fast, Die Young: The Wild Ride of Making Rebel Without a Cause, Lawrence Frascella and Al Weisel wrote, "Ironically, though Rebel had no rock music on its soundtrack, the film's sensibility—and especially the defiant attitude and effortless cool of James Dean—would have a great impact on rock. The music media would often see Dean and rock as inextricably linked [...] The industry trade magazine Music Connection even went so far as to call Dean 'the first rock star'."[110]
As rock and roll became a revolutionary force that affected the culture of countries around the world,[111] Dean acquired a mythic status that cemented his place as a rock and roll icon.[112]