gaga doesnt contrubute to everyone.. they are all their own people and they have just gotton more outrageous and changed through out time.. as gaga has as well :)
Nicki is the biggest copy cat if them all by far and she's missing. Ke$ha too. It's funny because Miley Cyrus noticed this and talke about it in an interview. Gaga has influenced fashion (especially in music) on an enormous level.