Carine Roitfeld

Carine Roitfeld at Dolce & Gabbana's Extreme Beauty in Vogue exhibition during Milan Fashion Week in Jan. 2009.

Anthea Simms, Camera Press / Retna

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Carine Roitfeld attends the Vogue 90th Anniversary Party as part of Ready to Wear Spring/Summer 2011 Paris Fashion Week at Hotel Pozzo di Borgo in September 2010.

Eric Ryan / Getty Images

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Carine Roitfeld attends the Christian Dior Ready to Wear show as part of the Paris Womenswear Fashion Week Fall/Winter 2011 at Espace Ephemere Tuileries in March 2010.

Lorenzo Santini, FilmMagic / Getty Images

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Carine Roitfeld attends the Giorgio Armani Prive show as part of the Paris Haute Couture Fashion Week Fall/Winter 2011 Espace Vendome in July 2010.

Tony Barson, WireImage / Getty Images

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Carine Roitfeld arrives at the Dolce & Gabbana Party held at the Baoli Restaurant during the Cannes Film Festival in May 2007.

Francois Durand / Getty Images

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Editor in Chief of U.S. Vogue magazine Anna Wintour and Editor of French Vogue magazine Carine Roitfeld attend the AmfAR's New York Gala at Cipriani in January 2008.

Bryan Bedder / Getty Images

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Carine Roitfeld and daughter Julia Restoin Roitfeld attend the Jean-Paul Gaultier Paris Fashion Week Spring/Summer 2010 show in October 2009.

Foc Kan, WireImage / Getty Images

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Carine Roitfeld and Vladimir Restoin-Roitfeld attend amfAR's Cinema Against AIDS 2010 benefit gala dinner at the Hotel du Cap in May 2010.

Dave M. Benett / Getty Images

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The controversial October 2009 issue of French Vogue styled by Carine Roitfeld features white model Lara Stone in blackface.

Steven Klein / Vogue Paris

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Carine Roitfeld and Karl Lagerfeld at the 2004 Costume Institute Gala Dangerous Liaisons in New York City.

Rabbani and Solimene Photography, WireImage / Getty Images

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Carine Roitfeld and designer Tom Ford attend amfAR's Cinema Against AIDS 2010 benefit gala cocktail reception at the Hotel du Cap in May 2010.

John Shearer / Getty Images

Carine Roitfeld

French Vogue editor Carine Roitfeld was the most famous editor in the business aside from Anna Wintour—until she quit. Jacob Bernstein asks industry insiders what made the rising star fall out of fashion.