Jacqueline Oknaian has costumed Ugly Betty (2008-10), Sex and the City 2 (2010) and The Big C (2012-13), so it might be fair to say contemporary clothing is her forte. For The Intern she dressed Anne Hathaway and Robert De Niro in that most tricky of cinematic costume: ‘office attire’. Fashion and practicality collide in what needs to be stylish but relatable clothing inside a believable setting. Here Ms Oknaian chats exclusively about her work on the film. Anne Hathaway has the perfect office wardrobe, where did you get your inspiration for her smart, but chic looks? I related to her character personally because I’m a mother and I’ve worked…