I'm a big believer in everybody being themselves. If not doing a swimsuit calendar is yourself that's great. But if doing a swimsuit calendar is yourself then you should be able to do it. What I do outside the car adds to who I am and expresses a different side of me.
Not all moral issues have the same moral weight as abortion and euthanasia. There may be legitimate diversity of opinion even among Catholics about waging war and applying the death penalty but not... with regard to abortion and euthanasia.