There's also the option of 'boudoir' shots. Professional pictures where they dress you up really hot in lingerie and have you pose seductively. I think it's a nicer alternative to naked pics because it's classier but still hot. I want to have some done, actually.
Did the naked pics thing ONCE....and when we broke up I demanded every single one of them back. He's a nice enough guy, I'm certain (but not positive) he didn't make photocopies first.