The French designer was synonymous with striped sweaters and Left Bank insouciance.
The music star had launched the collection last February during New York Fashion Week.
Cuts may be coming to Condé Nast.
Salma Hayek was among the guests at the opening cocktail.
Move over, teen moms from middle America, it looks like the royal fiancee will be the new queen of celebrity weeklies for a while.
The designer loves American television and often has DVDs of shows shipped to her in Milan.