I looked at all the photos of the "anti" fashion models. They are not so different from current model standards: predominantly young, light-skinned, symmetrical, very thin and photogenic. The only thing "edgy" are armpit hair, piercings and tattoos. The very last model photo shows a beautiful young woman with a curvy, average size body. She's the only slight variation from standard waif in the whole pack.

Trumping traditional beauty standards means people of all skin colors, age, body size and looks are styled and photographed in such a way that it brings out their individual beauty. That would be avant-garde.