She also has written instructional books like The Seductive Art of Japanese Bondage and Wild Side: The Book of Kink and taught sex education courses all over the world.

Although stunning, this one-time fetish model and former professional dominatrix is wary of her status as a sex symbol. "If people appreciate my writing and enjoy my classes and get something out of it, and dig my work because of my art and my activism and stuff that I do, hey, that's great. I think I'm, like, way past the age of being the pretty something, because after all I'm well in my 40s. There are certain people in my private life, well, I hope they think I'm sexy. But beyond that, I hope people appreciate my work because of its content."

www.planetmidori.com; www.ropedojo.com

Simone Kross, photographed by Constance Smith

SIMONE KROSS, THE ROLLING STONE

The perceived life of a traveling dominatrix is alluring: exotic getaways, extravagant dinners, five-star hotels transformed into makeshift dungeons. But the reality is not easy.

Says Simone Kross, a traveling pro-domme: "The perception is maybe that I am wealthy and I have clients flying me around and it's really exotic and glamorous. It's really not. It's hard work, and I pay my own way. The clients and sessions help me fund getting from one place to the next, but it's not as glamorous as it may seem. At least not for me."

Kross has no illusions about her frequently grueling work. While working out of hotels, she runs her advertising on Eros Guide, a large online erotic service listing. "I can get busy to the point where I might not see the outside of a hotel room for three or four days. After I finish my sessions I can be pretty tired, order room service, and go to bed. I could be doing sessions from one in the afternoon until 10 at night."

An added stress is traveling with heavy gear. "The biggest problem is weight requirements, because you have to keep it under 50 pounds," she says. What could be so heavy? "You'd be surprised," she says. "Leather and metal, D-rings, rope, whips. I don't even use half the gear I pack, but you never know what someone requires for a scene. The shoes also tend to weigh quite a bit."

Explaining a suitcase full of floggers, rope, gags, whips, and harnesses to airport security might seem awkward, but Simone says "they have checked my bags because they are a little heavier, but no one has given me any problems."

You can see Kross, a gorgeous brunette with cheekbones that appear perfectly convex from every angle, in action on Men in Pain, a chapter of Kink.com.

www.simonekross.com

Natasha Strange, photographed by Constance Smith

NATASHA STRANGE, THE PRINCESSA

Now that the age of feudalism has passed, not many women can admit to having a coterie of ladies-in-waiting, so Natasha Strange's "pink posse" — cross-dressing clients who have offered their services to her — is quite the blast from the past.