Shop Pre-Owned Isabel Marant Black Dress from 250+ stores, starting at $650. Similar ones also available. On SALE now! Isabel Marant N dress for women. Black. Size L International. Used condition. Isabel Marant was founded in the 90s and has firmly established itself in the world of high-end fashion, with an aesthetic that is sophisticated, on-trend and with a touch of bohemian style. Elevated by the expertise of the designer Isabel Marant herself, the elegant clothes made from natural fabrics are coveted season after season. The brands iconic collections are made up of pieces that can be worn both day and night and are laid-back and luxury at the same time.