The hire continues a bit of an editorial dance between More and Marie Claire. Ms. Seymour was succeeded at Marie Claire by Joanna Coles, then the executive editor at More.
Ms. Seymour's appointment today, however, fills a vacancy created when Peggy Northrop jumped to Reader's Digest last November.
'Longtime reader and fan'
"I'm thrilled to be able to have the opportunity to edit a magazine whose readers share an incredible passion for everything in their lives," said Ms. Seymour, who has also held top editorial positions at magazines including Redbook and YM. "As a longtime reader and fan of the title, I have always admired the incredible style, confidence and intelligence of the editorial product."
More's paid and verified circulation averaged 1,259,000 in the second half of 2007, up nearly 6% from the second half of 2006, according to preliminary figures filed with the Audit Bureau of Circulations. Ad pages grew 18.3% during the first three quarters last year, according to the most recent figures from the Publishers Information Bureau.