Well, that was the main topic - what does it mean to be Muslim?  It was a series of interviews and photographs of these young women.  I think they are all either children of immigrants or are immigrants themselves, from Muslim countries, with Muslim parents.  Do they consider themselves Muslim?  Some are practicing, some are not but still identify that way, some want to be assimilated western modern women, some want to maintain the culture of their parents.  Many said they are Muslim but not "good" or "proper" Muslims.  Some considered being Muslim a set of cultural expectations they had to navigate, not simply a matter of religious belief.  They had a wide range of opinions regarding relationships with boys, school, work, living in France, etc.  It was very fascinating.  

Here's a link to the book.  Here's the photographer's website.

"Pretending that you already know the answer when you don't is not actually very helpful." ~Migeru.