It seems logical that whether something falls into the porn category or not depends on whether the consumer uses it the same way they would Red Tube or whether they look at it like a fashion magazine, because with that quality of design, it's pretty clear 's audience will consist of both watchers and non-watchers of the steamy stuff.Wet Magazine, Mar/Apr 1980Then there's the question of whether any part of a naked body always has to be associated with sex.

One of the most common phrases thrown around our office recently, following the huge response to features on Japan's underground sex scene shown by the documentary , is "sex sells," and the fashion world has never been afraid to cash in on this (two of the key perpetrators being Calvin Klein and Tom Ford, with more than a few of their saucier ad campaigns deemed too racy for release).

There's no denying that the worlds of fashion and fetish have always been intertwined.

The Pirelli Calendar doesn't use glamour models, but supermodels.

The Victoria's Secret Fashion Show has become one of the industry's most anticipated, even this year vying for editors and models' attention against Chanel's coveted Métiers d'Art as they took place 700 miles apart on the same day.

Some of our most admired photographers have combined these entities to both accusation and praise; think Nobuyoshi Araki's infamous black and white photos of him and his friends visiting Tokyo sex clubs in the 70s, his specialty in carrying out the Japanese art of bondage, kinbaku-bi, or Helmut Newton's beautiful but erotically suggestive photography for the likes of both .

Photography Harley Weir, Baron Magazine Issue 3But recently there's been a new take on this relationship, where instead of just being "provocative," the books, films and magazines exploring it have been unapologetically all about porn., although only two years old and on its third issue is probably the most spoken about of this new type.Two of photography's most impressive up and comers, and i-D regulars, Tyrone Lebon and Harley Weir both have an element of the erotic to their work (check out Tyrone's , with Tyrone photographing its whole second issue - "Questioning the evolution of sexuality in today's image sharing society." Contact sheets of a girl with magenta hair cranking the shank of her bearded lover, bajingos and peni concealed only by completely transparent PVC and more than a few O-faces litter its pages.There's no doubt that these images are just as aesthetically pleasing as the work they've done for i-D or or even Céline, but stripped of its cinematic charm and it could just as easily be branded "porn".So what makes it ok to whack this erotic paperback out at work?"Much like ejaculation, porn or art is in the eye of the beholder," argues Robert Henry Rubin, Editor of cult magazine 's third edition.