Art or porn? Model exposes nipples on runway

FIRST MTV was accused of over-sexualising their videos, and now it seems the world of fashion has followed suit.

ART OR PORN? Lilly Sarti's models flashes the flesh

During Sao Paulo Fashion Week in Brazil, high end designer Lilly Sarti decided to put on an X-rated show – displaying her collection with topless models.

Dressed in one of the lowest cut jumpsuits we have ever seen, one of the models proudly strutted her stuff down the runway, risking a wardrobe malfunction as she went.

Not that it would have mattered if something had slipped out.

GREEN LIGHT: Instagram let the nipples be shown on their site

The outfit was sheer from the waist up – making sure the brunette beauty's nipples were on full display to the crowd the second she hit the stage.

However, rather than being accused of attention seeking, like many TV stars would if they stepped out in the racy number, it seems the nudity is all in the name of art.

BANNED: Rihanna was suspended for sharing this cover snap

In fact, even Instagram appears to have jumped on the nipple-flashing bandwagon – allowing the company to post an explicit snap to their thousands of followers.

Pop icon Rihanna previously had her account suspended when she shared a fully topless snap from her shoot with provocative glamour mag Lui.

Kendall Jenner was also given a warning after her arty nipple flash was removed from Marc Jacobs' page due to "violating Instagram's guidelines".