SMOOTH AS SILK: Barbara Hulanicki, the woman behind the Sixties and Seventies cult London emporium Biba, is gearing up for the launch of her first collection for Topshop this spring. The collection, based on a Good Girl/Bad Girl concept, features floaty pieces with tougher, contrasting silhouettes. “Until now, I’ve been working with furniture, so it’s nice to be around silky things again,” she said on the sidelines of the Topshop Unique show. Topshop has been likened to a modern-day Biba – an inexpensive, high-energy, chaotic fashion paradise for the young. But Hulanicki begs to differ. “Oh no, Topshop is much wilder,” she said.