I WISH I modeled. Right now I'm working up the nerve to ask one of my photographer friends if I can model for him (really creepy artsy stuff, some burlesque portaits, that kinda thing).
Fashion modeling I know there are schools that help you get into it. If you're looking to be a legit model, you can apply to Ford Models online (I think that's the name).
Dunno about fetish/lingerie, as I said my friend is an art photographer who does some, but his work is for galleries and his website, not magazines and clothing companies.