Agnona traces back to 1953, when Lanerie Agnona was founded in Italy's Sesia Valley and named after the small town at the foot of Monte Rosa. Its founder built the mill around rare natural fibers -- sourcing vicuña, cashmere and alpaca from as far as Tasmania, Peru, Mongolia and China -- and became a fabric supplier to couturiers including Christian Dior, Cristóbal Balenciaga, Pierre Balmain and Yves Saint Laurent. The house is now part of the Zegna Group.