The September issue for fashion magazines is extremely important. For this year’s September issue, InStyle looks to be in the early lead (Vogue hasn’t released their numbers yet) by posting 440 ad pages. According to its publisher, Connie Anne Phillips, this will be the largest InStyle in the magazine’s 18-year history. Adweek The official report from Vogue publisher Susan Plagemann has the Condé Nast flagship trouncing its competition with its largest September issue to date. With a whopping 658 ad pages, the magazine is up 14 percent year-over-year, making this the third year in a row that the title saw double-digit gains in September. Vogue isn’t releasing the total number of pages in its September issue just yet, but on Friday, it will launch a game on its Facebook page where readers can guess how big the magazine will be. WWD / Memo Pad While some titles — Elle and InStyle — crowed this week of breaking their own records for the all-important September issues, other publishers are contending with advertising figures for the month that are much softer than expected — and certainly shy of their halcyon prerecession days. For publishers, it was another stark reminder to put a premium on digital sales — and also e-commerce, licensing and tablets.