Since the owner decided to take a parting shot at me and then block me in a childish manner, I'll repeat what I was going to say in response here, maybe they'll see it...
"True, mages and superpowered persons can get away with it, still impractical and liable to fall off unless they're actively using adhesives or superpowers to hold them on but they can get away with extreme fan-service outfits as they don't need the protection, that at least is consistent with the level of unreality those worlds are working on.
The only time I really have a problem with fanservice outfits is when they don't make sense in context, say when a warrior is established as being badass normal, thus not swordproof, and still wanders around in a bikini, or when an acrobatic fighter wears something she should by all rights be popping out of with each flip. Fantasy universes still need to be true to their own established lore and rules.
But hey, that's just me and I tend to overthink things, your mileage may vary and if it works for you then good for you."