Clio Barnard’s stark yet heart-wrenching film The Selfish Giant (2013, UK) offers two fantastic performances from its young stars in their acting debut. Matt Price discusses how his costume design for the film reflects the strong, relatable characters so well… It is lunchtime in London as costume designer Matthew Price shuffles into the Curzon, Soho. Recently collaborating with Clio Barnard on the Bafta nominated film, The Selfish Giant, reuniting after experimental documentary The Arbour, Price is surprisingly reserved about his work. “I wasn’t really sure if they’d take me on again,” he says of Barnard and producer Tracey O’Riordan. “The Arbour did quite well so I didn’t know if they’d…