Well how hairy is your upper chest? I've seen pics and I don't think your upper chest is that hairy. Would it be totally covered up? Have you tried to draw it on to see what it would like like or at least held up a pic of the tat on the area? I just got a tat on my upper chest, but I'm almost completely hairless on my chest so I really don't have much to worry about in that respects. But if you did get a tat on a hairy area, it will grow back. I have another tat on my lower back leg and there's hair on it.