Why do Christians critize me for modeling for art?

Why do Christians critize me for modeling for art? I'm a Christian myself and a believer in God. I just so happen to model for art, a very beautiful form of art. I see no wrong in it ... art is art. I don't understand why so many other Christians condemn me and critize me for doing it. I'm a devout Christian myself and I find art to be beautiful. I'm very proud to be part of a work of art.