I'm not really sure if Katy Perry is a good Christian girl or not. How she dresses isn't the problem, it's her music. Listen to the words in futuristic lover or Teenage dream. Young girls listen to her music and look up to her so she could set a better example of a good Christian! Looking sexy doesn't nessasarily mean wearing less clothes. I like to look and feel good, but I do it for me and nobody else. I usually just wear jeans and a T-shirt, but that's sexy to me.