Naomi Campbell, Iman and Bethann Hardison have joined forces to condemn model industry bosses for the lack of diversity on magazine covers and catwalks.
The supermodels and activists have sent letters to the major councils of fashion designers in New York, London, Paris and Milan, listing every designer who uses just one or no model of colour in their runway shows, branding them "racist acts".
During an interview on US breakfast show Good Morning America on Monday, Iman said: "This is not the business of shaming. As we go back again to clear a fight, nobody is calling any of these designers racist. The act itself is racism."
Iman, who has been modelling since the 1970s, explains there was more diversity decades ago than there is now.