A Sydney teenager has rallied dozens of her fellow models who say they have been repeatedly groped, harassed and exploited by a fashion designer.

Tia Wright, 19, sent out a warning to other aspiring models after she was allegedly inappropriately fondled and verbally abused when she was hired to pose for Sydney club promoter Shardz Houranis's little-known fashion label Sanija Fashion.

A photo posted to the Facebook Page 'Say NO to Sanija Fashion'. Credit:Facebook

"WARNING ALL LADIES! SANIJA FASHION label is not a nice brand/person to work with … This label is very digrading [sic] for women and none of the many girls that have come from this label have been treated respectfully," she posted to the Facebook group "Photographers and Models" on Wednesday.

Photos of female models being arranged in poses by Houraniss as he allegedly groped their breasts, buttocks and thighs were posted to the Facebook page "Say NO to Sanija Fashion", run by fellow model Tayla Novelli who says she also experienced appalling and degrading treatment at the hands of Houranis.