The Business of Bobbysoxers reconsiders the story of American popular music, celebrity following, and fan behavior during World War II through close examination of "bobbysoxers." Preserved in popular memory as primarily white, hysterical, teen girl devotees of Frank Sinatra clad in bobby socks and saddle shoes, these girls were accused of displaying inappropriate behavior and priorities in their obsessive pursuit of a crooning celebrity at a time of international crisis. Author Katie Beisel Hollenbach peels back the stereotypes of girlhood idol adoration by documenting the intimate practices of wartime Sinatra fan clubs, revealing a new side of this familiar story in American history through the perspective of the bobbysoxer. In World War II America, fan clubs and organizations like Teen Canteens offered a haven for teenage girls to celebrate their enjoyment of popular culture while cultivating relationships with each other through media icons and the entertainment industry. Many of these organizations attempted to encourage diverse memberships, influenced in part by Frank Sinatra's public work on racial and religious tolerance, and by Sinatra's own identity as an Italian American. Away from the critical public eye, these communities offered girls a place to safely explore and discuss issues including civil rights, politics, the war, patriotism, internationalism, and professional development in the context of their shared Sinatra fandom. With these broader social and political complexities in mind, The Business of Bobbysoxers shines a light on musical fan communities that provided teenage girls with peer groups at a critical moment of personal and historical change, allowing them to creatively express their desires and imagine their futures as American women together.