Jeans are the popular garments worn by men and women from different ages in Iran. For religious Iranian garments, Jeans have special meaning in the mind.Meanwhile, it seems to have some values of Americanization and Westernization. The main hypotheses of this study are: 1. Religious have used American jeans. 2. Religious Iranians have used Jeans with different colors, models and Brands. 3. The meaning of Jeans wearing is different in different locations. This research questions is, "why do the religious Iranians follow Western values in their garments that are against their own values?" This research is based on the book by John Fiske for understanding popular culture. Qualitative research method and in-depth interview as the technique of research used by the author. Participants have been selected from two areas in East and North West of Tehran's mosques. They were asked of their meanings of wearing jeansthrough the interview. For example, people who attended in SharakeGharb Grand Mosque used more original brandJeans than those who were interviewed in Resalat Mosque who Frequently have been wearing fake Jeans. Jean's Connotations for Jean wearers in SharakeGharb Grand Mosque was fashion, modern, high class personality and for jean wearers in Resalat Mosque was just an ordinary clothing, just because of fashion and durability. Finally, none of the participants considered Jeans as a popular American goods.