When BJ Novak books a supporting role in a film or a guest spot on a television series, he’s often asked to bring a selection of his own clothes to wear on camera — so, he figured he’d do the same on The Devil Wears Prada 2 . “I showed up to the wardrobe department on my first day having brought my own things,” says Novak. “Then I walk into this two-story warehouse that every designer in the world has been flooding them with requests.” To be clear, Novak does not get to play a fashionista in the comedy. Twenty years after the first film, the sequel finds the publishing house behind the fictional Runway magazine at a bit of a crisis point. And his character, the company’s scion, is very quickly put at odds against the still-intimidating editor Miranda Priestly (played by, of course, Meryl Streep ). Adding to the tension between the two characters, Novak almost exclusively wears tech apparel and athleisure and rarely looks up from his phone. “At least it was a very comfortable wardrobe,” adds Novak.…