WHAT MAKES THE WORLD GO ROUND? FOR SIMONE ROCHA, it’s her rich and diverse creative community. Artists, writers, dancers, directors, poets, musicians, actors and artisans power her brand. With them as champions, Dublin-born Rocha has built a universe that resonates far beyond her independent, London-based label. And, today, part of that universe is squeezed into a sleek concrete-floored location house in north London. Five members of an Irish rock band are having pearls glued to their faces, a bestselling poet twirls in a tulle skirt, a painter is buckled into a tiered cream dress, while a prima ballerina digs into the shoot catering. All swarm in delight around Rocha, as happy to be wearing her new collection as they are to be in her – and each other’s – company.…