Lucifer promises he wouldn't have objected to her wearing clothes on her reappearance, even if she would have been losing her shirt shortly after getting there.

"There you are. Come here. Let's give my brother a look at the back of your shoulder, hmm?" He wants to make sure Gabriel gets a good look at it, not just the little he could see through a wet shirt.

Gabriel turns his head from his new location on his knees although still a good distance away from his brother to watch her approach.