Frank Sinatra and the 'bobby-soxers'
From our New York correspondent Wednesday January 10, 1945

(...) Many thousands of his "fans" have never seen him in the flesh but have only heard him broadcast or seen him on the films, where, incidentally, he is not particularly successful. Psychologists have written soberly about the hypnotic quality of his voice and the remarkable effect upon susceptible young women. Because he wears a polka-dotted bow tie hundreds of thousands of young people of both sexes wear a similar tie. The teen-age girls who constitute the main part of his audience also wear short white half-hose, and are therefore called "bobby-sox girls" or, more simply, "bobby-soxers." (...)

Quelle: Guardian Unlimited

bobby soxers: young female swing fans who wear bobby socks