Well there's always magnets but nowhere near as effective, or you could try dynamic cloth, that can give some nice results if you have the patience to set it up for that.

There's a guy over at Renderotica who could do wonders with dynamic cloth coming off bodies but not sure he'd give any secrets away, his name is Quoom. Be warned though, if you seek him out, his images aren't for the faint hearted!

Injustice will be avenged.
Cofiwch Dryweryn.