Are you trying to create a bad boy who fits the usual "look"? This is a great way of giving your reader visual cues on who they're supposed to love and be interested in your character off the bat. They can associate your bad boy with all of those sexy bad boys they remember from elsewhere. Of course, this only works if your bad boy has a character and isn't just a walking stereotype, so make sure you spend some time on character development! And as always, your bad boy doesn't need to tick all of these boxes to work!