The designer behind Kate Middleton's favourite dresses has launched a new brand

The designer behind Kate Middleton's favourite dresses has launched a new brand

There is a woman in a shop: the only suggestion of colour, a single pink bow amid a rail of black and white. The woman herself seems to belong to the same palette: jet-black hair in a perfect bowl cut framing porcelain skin and green eyes. She wears a short black dress with over-the-knee socks, managing to look both sexy and correct. She sits, one leg coiled around the other, with the stillness of a cat. Her name is Susie Cave and you may know h…