Vogue's September issue weighs in at 584 pages and 2.39 pounds. Photo: Vogue

We always feel a little sorry for mail carriers this time of year. You see, we subscribe to a lot of magazines. Like, way more than we should probably admit, and the September issues? Well, pile 'em all up and they probably weigh as much as one cover model.

And even though there have been lots of stories in recent weeks about this year's September fashion magazines being "unfashionably skinny," they're still the biggest issues of the year. So, how do they compare? TheWrap.com, a Los Angeles-based entertainment and media site, hit the newsstands to see how 10 top fashion titles stacked up. Here's what they found.

Total pages -- in order: Vogue (584), InStyle (514), Elle (496), Harper's Bazaar (486), W (340), Lucky (310), Glamour (296), Cosmopolitan (262), Marie Claire (252), Allure (212)

Ad pages -- in order: Vogue (447), InStyle (303.1), Elle (302), Harper's Bazaar (247), Lucky (192.9), W (168.55), Cosmopolitan (142.6), Glamour (137), Allure (113), Marie Claire (109)

Pages before editor's note -- in order:
Vogue (207), W (158), Elle (151), Harper's Bazaar (143), Lucky (88), Allure (59), Glamour (50), InStyle (47), Cosmopolitan (28), Marie Claire (22)

Weight in pounds -- in order:
Vogue (2.39), InStyle (2.10), Elle (2.02), Harper's Bazaar (1.97), W (1.39), Lucky (1.33), Glamour (1.21), Cosmopolitan (1.07), Marie Claire (1.00), Allure (.86)

To read about the new Vogue documentary, "The September Issue," click here.