Complex sentence: Some 1970s models had also died from drug use, Gia Carangi died of AIDS in 1986, and top fashion photographers, tired of their behavior, refused to work with them any longer.
Split into simpler sentences: Some 1970s models died from drug use, including Gia Carangi, who died of AIDS in 1986. Top fashion photographers, tired of their behavior, refused to work with them any longer.