After apprenticing for Oscar de la Renta and Alber Elbaz, Assoulin debuted her first collection for young sophisticates in 2014. Voluminous skirts and draped gowns recall the midcentury glamour of Babe Paley and Slim Keith, but daywear options, like wide-leg trousers and crisp shirtdresses, have an artful restraint that is completely of the moment.

© Sophy Holland