Jourdan Dunn on how social media could battle catwalk racism As she backs Iman and Naomi Campbell's campaign for racial diversity on the catwalks, the British model believes sites like Twitter could hold the key to fighting racism in fashion. British model Jourdan Dunn has backed Iman and Naomi Campbell's campaign for racial diversity on the catwalks, saying: "I want to talk about what goes on. A lot of people are scared to speak up. As one of the industry's most successful models - she's racked up campaigns for the likes of Burberry and Yves Saint Laurent and walks the catwalk for countless designers each season - Dunn believes social media can, and will, be vital in the fight against racism. READ: Jourdan Dunn's breasts obstruct her Haute Couture dreams "It's great, especially for models who want to be listened to," says Dunn, who has 113,000 Twitter followers and often candidly posts about her encounters with racism. According to the mother-of-one, the amount of social media followers a model has is also becoming a major draw for casting agencies and designers who are eager to gain maximum exposure for their catwalk collections or ad campaigns, thus emphasising the power of outlets such as Twitter. The 23-year-old Londoner has previously spoken of her experiences of racism in the industry, citing one occasion when she was turned away from a casting because they "didn't want any more black girls," and another where a Caucasian make-up artist refused to do her make-up because it made her feel uncomfortable. The people who control the industry ... say if you have a black face on a magazine cover it won't sell, but there's no real evidence for that. It's lazy," she told The Guardian .