In this study, we considerate that acculturation process creates a difference between migrant's generations concerning cultural representations. In support of different theoretic contributions, we think, also, that adolescence could increase this difference and set migrant's adolescents nearer to the young French people having the same ages. Our aim, in this study, is to verify this difference in a specific field, the one of the representations and lived experiences of sexuality. For this reason, we have compared, with a questionnaire, the expression of this difference among two adolescents’ groups aged from 13 to 17 years (middle age: 15.79; standard deviation: 2.77). The first group is constituted by 67 adolescent girls descended from cultural’ area influenced by Islam (parents are coming from Algeria, Morocco, Tunisia or Turkey). The second group is constituted by 67 adolescent girls whose culture is influenced by Christianity and the age of enlightenment. The results obtained, through the questionnaire, demonstrate that, despite their birth or their precocious coming in the host country, the adolescent girls whose culture is influenced by Islam are clearly different from the adolescent girls of the other group. For these young girls, the sexuality or only the private life stay still taboo and they are close to ancestral lived experiences and representations of sexuality.