My first reconstruction of Tyrannosaurus rex, and obviously pretty speculative. First of all, I've added more soft tissue around his snout and neck. If you look closely you can just about make out the line of the skull at the top of his snout. I also gave him quite extensive lips, which are endowed with whiskers. Yes, dino whiskers! These modified feathers are connected to nerve endings, making them highly sensitive. I think that sensory bristles such as these would have been quite common amongst small non-avian dinosaurs, and lives on today in the form of rictal bristles around bird beaks. However, amongst large theropods they may not have been as common, although I have speculated on Spinosaurus having sensory bristles adapted to use underwater. Other than that, he's mostly featherless, apart from some sparse bristles on his face and neck. This is because I'm not neccesarily for a full covering of feathers on all theropods. I think that amongst theropods plumage in SOME form would have been common, but I have no doubt that it would have varied a lot. Some may have been naked save for some whiskers, but many were probably covered in a thick layer of plumage. That's why I reconstructed T. rex as mostly featherless in this case, not neccesarily because I have some theory or argument against it, just to show that we don't neccasarily have to cover all theropods in feathers. Variation would probably have been present, and as paleoartists, we have the great and fun freedom of experimenting with that.