The British fashion photographer, his muse — and a very noisy lion

Five years ago the British fashion photographer Tim Walker — long celebrated for his flights of fancy, part Lewis Carroll, part Studio 54 — took an unusually straightforward picture. It was of a black-clad 20-year-old girl, hands in pockets, rather stern expression on face, against a white backdrop. She didn’t look sure if she wanted to be there. She wasn’t. “I didn’t know how to act in front of a camera,” she recalls now.