Stella McCartney's cream twill trousers are an example of the designer's talent for creating precise staples on which to build a smart ready-to-wear wardrobe. They're tailored with a slim high-rise waistband and back-yoke darts to create a streamlined silhouette and the straight legs are defined with pressed creases. Wear them with a simple white shirt and backless leather mules to keep the ankle-grazing hems in focus.