She has many leather skirts

Something is going wrong with my daughter. I cannot recognize her. She changed a lot since she went back from this summer camp last year. She always had great grades in school and she was nice to everybody. But now she started to act like a rebel. She has those new friends that are wearing black clothes. She started to listen to this loud music. I think they call it heavy metal or something. When I was young I liked to listen do rock music but it never was such brutal as the music she likes. I can understand that she has to develop as a human being and that she is no longer a child but I am starting to get worried. She acts really weird. My husband tells me that everybody has to go through this part of one"s life and when we were young we were also acting strange in our parents opinion. But anyway I am worried. I really do not remember me being such rebellious kid. The worst thing that I noticed lately were her clothes. She started to wear black clothes but not only. Now she has many things made from leather. She has even Leather Skirts. Well I am really worried. Maybe this is some kind of trend but a sixteen years old girl should not wear leather skirts. Is inappropriate. But again I do not want to start a fight with her. Nowadays she gets upset so easily. I miss my old daughter but it seems that she will not be back.