Well, keep the world real, and make the character's lives interesting, and giving them an unbeatable combat combo that involves distracting entire groups of people while you take off your clothes doesn't really seem either, does it, unless you accept that it's a supernatural effect, yeah?
But I mean, I've been there. Standing at a post as a security guard at the casino, mostly only checking to make sure minors or people with large luggage don't get on the gaming floor, and somebody so damn fucking hot walks by that all my higher brain functions just shut down, and I just stop and stare for a bit despite myself. I think we've all been there, right?
Now imagine, just like a dream, just like a gift from the gods, they start taking off their clothes. Slowly, teasingly, revealing more and more of that perfect skin, that perfect body.
And furthermore imagine that up until now, everyone you've ever seen in this goddamn world has been diseased, starving, unwashed, broken and scarred by the harsh and merciless cruelties of day to day life that everyone's got to labor under, and this is the first vision of true beauty that you've ever seen. Nothing else even compares.
And sure, part of your brain is probably going "this has to be a trap!!!" even if you don't want to listen to it. And if you're a PC, maybe you can act under that all-consuming fire, maybe some movement in the corner of your vision, or some half-heard sound of somebody approaching you from behind diverts your attention for a crucial second, and the spell is broken.
But maybe it doesn't. Maybe you could die a happy man, or woman, or whatever, having seen what you've seen today. Maybe that'd be all right. And all you can think is "Let those other fuckers go first, because the skinner's about to get to the good stuff."