We've all heard that mother before.
"I think Taylor Swift is such a wonderful person and I am so glad to have her as a role model for my [preteen/teen] daughter".
Taylor Swift may be a lot better than many celebrities these days *thinks of names such as Miley Cyrus* ... but that doesn't make her good enough to be a role model. Everyone makes mistakes, and people are bound to let you down from time to time. Taylor Swift once did that to me in her music video for "I Knew You Were Trouble" - and that made me realize that people are bound to let you down, and if you take celebrities off a pedestal, their actions won't shock you so much. I'm not saying that means that celebrities can do whatever they want and do immoral things, but that you have to realize that even if someone is a Christian, that doesn't mean they're never going to do something that will shock you at one point or other. Or at least, make you feel a little sad.
If I'm going to take someone for a role model, one of my first thoughts would be my own mother or father - because they're wonderful and I know they want to set a good example for me.
But if you want the best role model you can get? You go to Jesus, His mother Mary, or both.