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.
The designer’s visit drew an A-list crowd in London on Wednesday.
The substance abuse charity held its annual dinner amid New York’s snowy conditions.
The fashion house set the production in the Cour Carré of the Louvre, the site of its big-budget fashion shows for the past few seasons.
Third-quarter results from Nordstrom Inc., Dillard’s Inc. and Kohl’s Corp. showed chains that gained ground over the last few months.