This American fashion house was established in 1997 thanks to the ingenuity of Andrew
Rosen and Elie Tahari. The first collection dedicated to women immediately became
popular, so much so that the following year the men’s collection was also launched. In 2003,
women’s bags and shoes arrived. Theory’s garments became well known rapidly. And the
success led Theory to buy the Helmut Lang brand from Prada. And other brands such as the
German house Rosner, Proof, + T PLS and the footwear brand Jean-Michel Cazabat.