Oh get from round your cauldron, you harpies.
We're talking about very inoffensive nudity, NOT hardcore porn. Or anything approaching hardcore porn, for that matter.
It's not my cup of tea, granted, but I'm hardly offended by it and I doubt that the girls taking part feel any trauma because of it. You just need to accept that some women like doing this sort of stuff. It's not up to you or I to call it vile, especially if it's for a good cause rather than for shits and giggles.