Look closely at Rochas’s black cotton-blend trousers and you’ll notice subtle 1970s-tinged square accents in the floral jacquard – a nod to Alessandro Dell’Acqua exacting approach to design. They’re made in Italy with a high-rise waist and fall to flattering cropped slim legs that are defined by smart pressed creases. Simply slip on a white blouse and stiletto mules for polished evening opulence.