"Cosmopolitan is an iconic brand that resonates with women worldwide," Coles said in a statement. "To be able to take over the flagship edition is both a huge challenge and an incredible opportunity. I relish the chance to put my stamp on Cosmo and make it the young woman's ultimate playbook for confidence, choices and navigating change."
Coles, who has filed stories everywhere from the BBC to New York Magazine, introduced Marie Claire to the world of reality television. In 2008 she produced Running in Heels, a competition show set in the magazine's offices. She also got the brand's name on Project Runway when she hired Nina Garcia as Marie Claire's fashion director the same year.
White had been editor of Cosmopolitan for 14 years. She left to pursue her own writing and speaking engagements.
Update: Coles's office at Marie Claire will now be occupied  by Anne Fulenwider, who served as the magazine's executive editor for two years until she became editor in chief of Brides in late 2011. "I have such a strong attachment to the brand and what it delivers to the savvy, stylish women who read it," Fulenwider said about her homecoming. "I look forward to contributing to its continued success on every front — from print to digital to television."
Photo via Joanna Coles.