Melania Trump was a supermodel. And as a supermodel, posing for pictures is what she did for a living. Is she still currently posing for pictures in that manner? I seriously doubt it. You probably understand very little about Christianity, so I'll explain it to you: Repentance is one of the basic concepts of Christianity. And based on the fact that we're not seeing and recent scantily-clad pictures of Melania Trump, one would only assume that she has repented of those things.
Of course, based on your condemnation of Melania Trump and Evangelicals, I can understand how you feel. You probably support a culture that endorses unrepentant homosexuality, same-sex marriage, pedophilia, transgenderism, and the murder of innocent unborn children.